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---
title: Hacker News submission analysis
description: Describing HN submissions; estimating manipulability
created: 25 Sep 2013
tags: statistics
status: notes
belief: likely
...
Related:
- http://nathanael.hevenet.com/the-best-time-to-post-on-hacker-news-a-comprehensive-answer/
- http://minimaxir.com/2014/02/hacking-hacker-news/
- http://karpathy.ca/myblog/2013/11/27/quantifying-hacker-news-with-50-days-of-data/
- http://metamarkets.com/2011/hacking-hacker-news-headlines/
- http://danluu.com/randomize-hn/
- http://www.bayesianwitch.com/blog/2013/why_hn_shouldnt_use_randomized_algorithms.html
- http://gkosev.blogspot.com/2012/08/fixing-hacker-news-mathematical-approach.html
- http://blog.rjmetrics.com/2012/10/17/surprising-hacker-news-data-analysis/
- http://blog.rjmetrics.com/2012/10/24/how-to-get-on-the-front-page-of-hacker-news/
Page view counts:
- 11.8k https://web.archive.org/web/20130719064119/http://aberrant.me/front-page-of-hacker-news/
- 15k http://www.mikedellanoce.com/2012/09/my-first-hacker-news-effect-experience.html
- 30k, 12k http://shkspr.mobi/blog/2012/11/whats-the-front-page-of-hackernews-worth/
- 8.5k http://tumbling.alastair.is/post/17661390124/fun-with-analytics-pitting-hacker-news-and
- 15k http://najafali.com/zero-to-fifteen-thousand-in-twenty-four-hours.html
- 15.2k http://www.matvoz.com/blog/2013/10/interesting-facts-about-when-you-get-hit-by-hacker-news-tsunami/
- 7k unique visitors http://greig.cc/journal/2013/1/what-does-a-hacker-news-traffic-spike-look-like
- 10k unique visitors https://whoapi.com/blog/554/how-hacker-news-hit-us-with-10-000-unique-visitors-in-10-hours/
- >40k unique visitors https://news.ycombinator.com/item?id=7427542 "in one 24 hour period, 35,000 visits and 32,000 uniques"
- https://medium.com/p/81bd75a39425
# Submissions
Question: is submitting to HN worthwhile?
Simple experiment: submit each day one link to gwern.net + 2 links to other domains. These serve as both a rough control for that day's difficulty of front page, any benefits or penalties applied to my account, and repayment to HN for the potential spamming.
per nathanael's post, I tried to consistently post around 10AM EST (I don't get up early enough to do 7-8AM EST). Apparently he's wrong? Oh well.
https://news.ycombinator.com/submitted?id=gwern
extract stats from http://hn.algolia.com/#!/story/sort_by_date/prefix/0/author%3Agwern ? API: https://hn.algolia.com/api
Sep 2013, started with: '"Equoid" (Charles Stross meets My Little Pony)' (http://www.tor.com/stories/2013/09/equoid) https://news.ycombinator.com/item?id=6445266 5 points by gwern 6 months ago; 0 comments
multi-level Poisson model? Group by Domain and cross group by Day. mixture model? seems appropriate for two different groups (those who make front page and those who don't)
can't filter GA by ycombinator.com: https breaks referrers
# /newest
> The social news service Hacker News has a two-layered organization, where newly submitted links are displayed on a '/newest' page seen by few users, and the best (as determined by users voting on each submission) are automatically selected for display on the high-traffic main front-page which most HN users read.
> I hypothesized that there is a lack of traffic on /newest and this implies that even one vote can substantially affect the chance a particular submission will reach the front-page, its ultimate score, and page-views of the submitted link.
> A randomized experiment in upvoting small batches of links confirms that the effect is real & large: TODO.
While using HN, as a sort of 'public service', I occasionally made sure to visit the [newest submissions](https://news.ycombinator.com/newest "New Links") page rather than just the [main front page](https://news.ycombinator.com/news) most people read.
After a while, I noticed that the links I upvoted there seemed to be turning up a lot on the front page, more than I would expect from my usual pattern of upvoting perhaps 5 links out of the 30 available.
A horrible suspicion struck me: could the apparent arbitrariness of what links made the front page be caused by the /newest page being *so* sparsely voted upon that a single upvote made a meaningful difference?
## Methodology
I decided to do a randomized parallel groups experiment to test:
On /newest, take the first 5 links (#1-5, to maximize impact), do a simple 50-50 randomization on each to decide whether to upvote or ignore (I have a shell function for randomization: `echo "$((RANDOM % 2 < 1))"`);
and make no votes on any other /newest items (I allowed myself my usual browsing & upvoting on the main page while I was there).
As I have 'noprocast' turned on for 180 minutes, each group of 5 links should have been separated by a minimum of 3 hours (more than enough time for all links to fall off /newest).
This was typically done during HN's busiest hours: 11AM-midnight EST.
I was not blinded during the experiment, but the writeup & list were never public while the experiment was running.
I used my existing high-karma (>7k) account since there doesn't seem to be any weighting of upvotes, reading through ["Inside the news.yc ranking formula"](http://www.righto.com/2009/06/how-does-newsyc-ranking-work.html), ["How Hacker News ranking algorithm works"](http://amix.dk/blog/post/19574) & [discussion](https://news.ycombinator.com/item?id=1781013).
A power calculation for sample size is hard to do: I don't have a Poisson power function handy, and I don't expect the data to fit a Poisson too well due to the stark contrast between the front-page and /newest.
(And I do want a well-powered experiment - the only thing more wasteful than an overpowered experiment is an underpowered weak experiment.)
However, I do expect the necessary sample to be quite large by the standards of continuous normally-distributed data.
Most submissions to /newest fail to gain more than an upvote or two, which means that most of the sample contains little information about whether the extra upvote helped them reach the front-page or not.
Further, I don't just want to estimate whether the net effect of upvoting is >1, I would like a reasonably precise estimate of *what* the effect is: knowing that it's, say, +2-10, is not very satisfactory. ("The oncoming car is somewhere between 10 meters and a kilometer away.")
All in all, I don't expect the necessary _n_ to be <200.
I decided to stop at _n_=300.
The experiment ran from 16 March 2014 - 31 March 2014.
On 22 April, after doing my planned analysis, the results turned out to be as expected but weaker than I'd prefer (turned out a *lot* of the sample is just a waste as they are stuck at +1/2) and so I resumed randomization to get another 100 links or so.
I stopped the additional randomization on 6 May.
## Analysis plan
The analysis strategy is:
1. a non-parametric test of difference in mean scores
2. dichotomize the items by <10 as a proxy for having made it to the front-page for a meaningful amount of time, for a [logistic regression](!Wikipedia) to estimate increase in front-page odds
3. attempt a Poisson regression on scores, to extract an estimate of the difference in means
4. something fancier, suggested by the data (such as a [mixture model](!Wikipedia) of Poissons, perhaps, to split between front-page and non-front-page)
TODO: extract page views & time on page from my old Analytics, letting me calculate 'how much time am I steering with, say, 10 upvotes on /newest?'
## Data
upvoted:
https://news.ycombinator.com/item?id=7410094
https://news.ycombinator.com/item?id=7410068
https://news.ycombinator.com/item?id=7410065
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https://news.ycombinator.com/item?id=7630657
https://news.ycombinator.com/item?id=7631449
https://news.ycombinator.com/item?id=7631445
https://news.ycombinator.com/item?id=7634123
https://news.ycombinator.com/item?id=7634120
https://news.ycombinator.com/item?id=7634099
https://news.ycombinator.com/item?id=7635489
https://news.ycombinator.com/item?id=7635479
https://news.ycombinator.com/item?id=7636681
https://news.ycombinator.com/item?id=7637667
https://news.ycombinator.com/item?id=7638285
https://news.ycombinator.com/item?id=7638261
https://news.ycombinator.com/item?id=7638240
https://news.ycombinator.com/item?id=7640751
https://news.ycombinator.com/item?id=7640742
https://news.ycombinator.com/item?id=7640734
https://news.ycombinator.com/item?id=7641897
https://news.ycombinator.com/item?id=7641895
https://news.ycombinator.com/item?id=7643084
https://news.ycombinator.com/item?id=7643078
https://news.ycombinator.com/item?id=7644238
https://news.ycombinator.com/item?id=7644232
https://news.ycombinator.com/item?id=7644203
https://news.ycombinator.com/item?id=7644199
https://news.ycombinator.com/item?id=7646719
https://news.ycombinator.com/item?id=7646709
https://news.ycombinator.com/item?id=7646694
https://news.ycombinator.com/item?id=7646691
https://news.ycombinator.com/item?id=7647963
https://news.ycombinator.com/item?id=7647958
https://news.ycombinator.com/item?id=7647954
https://news.ycombinator.com/item?id=7648978
https://news.ycombinator.com/item?id=7649855
https://news.ycombinator.com/item?id=7649823
https://news.ycombinator.com/item?id=7649815
https://news.ycombinator.com/item?id=7649810
https://news.ycombinator.com/item?id=7650256
https://news.ycombinator.com/item?id=7650232
https://news.ycombinator.com/item?id=7650229
https://news.ycombinator.com/item?id=7651604
https://news.ycombinator.com/item?id=7651592
https://news.ycombinator.com/item?id=7651579
https://news.ycombinator.com/item?id=7651563
https://news.ycombinator.com/item?id=7652270
https://news.ycombinator.com/item?id=7652260
https://news.ycombinator.com/item?id=7652254
https://news.ycombinator.com/item?id=7652800
https://news.ycombinator.com/item?id=7652798
https://news.ycombinator.com/item?id=7652777
https://news.ycombinator.com/item?id=7652764
https://news.ycombinator.com/item?id=7652761
https://news.ycombinator.com/item?id=7653301
https://news.ycombinator.com/item?id=7653297
https://news.ycombinator.com/item?id=7653273
https://news.ycombinator.com/item?id=7653267
https://news.ycombinator.com/item?id=7653745
https://news.ycombinator.com/item?id=7653723
https://news.ycombinator.com/item?id=7655287
https://news.ycombinator.com/item?id=7655281
https://news.ycombinator.com/item?id=7655278
https://news.ycombinator.com/item?id=7656019
https://news.ycombinator.com/item?id=7656003
https://news.ycombinator.com/item?id=7656858
https://news.ycombinator.com/item?id=7656806
https://news.ycombinator.com/item?id=7656778
https://news.ycombinator.com/item?id=7657521
https://news.ycombinator.com/item?id=7657518
https://news.ycombinator.com/item?id=7657515
https://news.ycombinator.com/item?id=7657497
https://news.ycombinator.com/item?id=7658020
https://news.ycombinator.com/item?id=7660808
https://news.ycombinator.com/item?id=7660796
https://news.ycombinator.com/item?id=7662240
https://news.ycombinator.com/item?id=7662217
https://news.ycombinator.com/item?id=7663572
https://news.ycombinator.com/item?id=7663567
https://news.ycombinator.com/item?id=7663540
https://news.ycombinator.com/item?id=7663539
https://news.ycombinator.com/item?id=7664488
https://news.ycombinator.com/item?id=7664475
https://news.ycombinator.com/item?id=7664460
https://news.ycombinator.com/item?id=7667576
https://news.ycombinator.com/item?id=7667540
https://news.ycombinator.com/item?id=7669036
https://news.ycombinator.com/item?id=7669035
https://news.ycombinator.com/item?id=7669027
https://news.ycombinator.com/item?id=7669025
https://news.ycombinator.com/item?id=7670043
https://news.ycombinator.com/item?id=7670035
https://news.ycombinator.com/item?id=7670101
https://news.ycombinator.com/item?id=7670969
https://news.ycombinator.com/item?id=7673841
https://news.ycombinator.com/item?id=7673831
https://news.ycombinator.com/item?id=7673809
https://news.ycombinator.com/item?id=7675258
https://news.ycombinator.com/item?id=7676629
https://news.ycombinator.com/item?id=7676615
https://news.ycombinator.com/item?id=7681583
https://news.ycombinator.com/item?id=7681581
https://news.ycombinator.com/item?id=7681566
https://news.ycombinator.com/item?id=7682763
https://news.ycombinator.com/item?id=7682760
https://news.ycombinator.com/item?id=7682751
https://news.ycombinator.com/item?id=7683584
https://news.ycombinator.com/item?id=7683556
https://news.ycombinator.com/item?id=7683555
https://news.ycombinator.com/item?id=7687323
https://news.ycombinator.com/item?id=7687316
https://news.ycombinator.com/item?id=7687307
https://news.ycombinator.com/item?id=7688997
https://news.ycombinator.com/item?id=7688986
https://news.ycombinator.com/item?id=7688985
https://news.ycombinator.com/item?id=7691192
https://news.ycombinator.com/item?id=7692029
https://news.ycombinator.com/item?id=7692010
https://news.ycombinator.com/item?id=7692040
https://news.ycombinator.com/item?id=7694347
https://news.ycombinator.com/item?id=7694346
https://news.ycombinator.com/item?id=7694332
https://news.ycombinator.com/item?id=7694319
https://news.ycombinator.com/item?id=7695847
https://news.ycombinator.com/item?id=7696461
https://news.ycombinator.com/item?id=7696459
https://news.ycombinator.com/item?id=7696458
https://news.ycombinator.com/item?id=7696844
https://news.ycombinator.com/item?id=7696843
https://news.ycombinator.com/item?id=7698827
https://news.ycombinator.com/item?id=7698826
https://news.ycombinator.com/item?id=7700220
https://news.ycombinator.com/item?id=7701855
https://news.ycombinator.com/item?id=7701835
https://news.ycombinator.com/item?id=7702514
https://news.ycombinator.com/item?id=7702509
https://news.ycombinator.com/item?id=7702505
https://news.ycombinator.com/item?id=7702500
https://news.ycombinator.com/item?id=7704503
https://news.ycombinator.com/item?id=7704485
https://news.ycombinator.com/item?id=7705794
https://news.ycombinator.com/item?id=7705789
https://news.ycombinator.com/item?id=7706898
ignored:
https://news.ycombinator.com/item?id=7410071
https://news.ycombinator.com/item?id=7411079
https://news.ycombinator.com/item?id=7411066
https://news.ycombinator.com/item?id=7411060
https://news.ycombinator.com/item?id=7412315
https://news.ycombinator.com/item?id=7412294
https://news.ycombinator.com/item?id=7412252
https://news.ycombinator.com/item?id=7412241
https://news.ycombinator.com/item?id=7416935
https://news.ycombinator.com/item?id=7416922
https://news.ycombinator.com/item?id=7418230
https://news.ycombinator.com/item?id=7418225
https://news.ycombinator.com/item?id=7418222
https://news.ycombinator.com/item?id=7419192
https://news.ycombinator.com/item?id=7422960
https://news.ycombinator.com/item?id=7422959
https://news.ycombinator.com/item?id=7424951
https://news.ycombinator.com/item?id=7424928
https://news.ycombinator.com/item?id=7424923
https://news.ycombinator.com/item?id=7424910
https://news.ycombinator.com/item?id=7424896
https://news.ycombinator.com/item?id=7426094
https://news.ycombinator.com/item?id=7426074
https://news.ycombinator.com/item?id=7426699
https://news.ycombinator.com/item?id=7426643
https://news.ycombinator.com/item?id=7426640
https://news.ycombinator.com/item?id=7429618
https://news.ycombinator.com/item?id=7429616
https://news.ycombinator.com/item?id=7429609
https://news.ycombinator.com/item?id=7429604
https://news.ycombinator.com/item?id=7430954
https://news.ycombinator.com/item?id=7430949
https://news.ycombinator.com/item?id=7430946
https://news.ycombinator.com/item?id=7430939
https://news.ycombinator.com/item?id=7432227
https://news.ycombinator.com/item?id=7432222
https://news.ycombinator.com/item?id=7432217
https://news.ycombinator.com/item?id=7433188
https://news.ycombinator.com/item?id=7433184
https://news.ycombinator.com/item?id=7433160
https://news.ycombinator.com/item?id=7433144
https://news.ycombinator.com/item?id=7436103
https://news.ycombinator.com/item?id=7437748
https://news.ycombinator.com/item?id=7437745
https://news.ycombinator.com/item?id=7437726
https://news.ycombinator.com/item?id=7437718
https://news.ycombinator.com/item?id=7439413
https://news.ycombinator.com/item?id=7439405
https://news.ycombinator.com/item?id=7439385
https://news.ycombinator.com/item?id=7440232
https://news.ycombinator.com/item?id=7440220
https://news.ycombinator.com/item?id=7440217
https://news.ycombinator.com/item?id=7440212
https://news.ycombinator.com/item?id=7440205
https://news.ycombinator.com/item?id=7443068
https://news.ycombinator.com/item?id=7443053
https://news.ycombinator.com/item?id=7443041
https://news.ycombinator.com/item?id=7444177
https://news.ycombinator.com/item?id=7444169
https://news.ycombinator.com/item?id=7444160
https://news.ycombinator.com/item?id=7444155
https://news.ycombinator.com/item?id=7445325
https://news.ycombinator.com/item?id=7445320
https://news.ycombinator.com/item?id=7445303
https://news.ycombinator.com/item?id=7446563
https://news.ycombinator.com/item?id=7446533
https://news.ycombinator.com/item?id=7446522
https://news.ycombinator.com/item?id=7449691
https://news.ycombinator.com/item?id=7449688
https://news.ycombinator.com/item?id=7449681
https://news.ycombinator.com/item?id=7449666
https://news.ycombinator.com/item?id=7449663
https://news.ycombinator.com/item?id=7451253
https://news.ycombinator.com/item?id=7451233
https://news.ycombinator.com/item?id=7451228
https://news.ycombinator.com/item?id=7451745
https://news.ycombinator.com/item?id=7451738
https://news.ycombinator.com/item?id=7451732
https://news.ycombinator.com/item?id=7451719
https://news.ycombinator.com/item?id=7451824
https://news.ycombinator.com/item?id=7451819
https://news.ycombinator.com/item?id=7451808
https://news.ycombinator.com/item?id=7451788
https://news.ycombinator.com/item?id=7451762
https://news.ycombinator.com/item?id=7453743
https://news.ycombinator.com/item?id=7453712
https://news.ycombinator.com/item?id=7453702
https://news.ycombinator.com/item?id=7455421
https://news.ycombinator.com/item?id=7455419
https://news.ycombinator.com/item?id=7455406
https://news.ycombinator.com/item?id=7455377
https://news.ycombinator.com/item?id=7456109
https://news.ycombinator.com/item?id=7456095
https://news.ycombinator.com/item?id=7459215
https://news.ycombinator.com/item?id=7460872
https://news.ycombinator.com/item?id=7460871
https://news.ycombinator.com/item?id=7460867
https://news.ycombinator.com/item?id=7462235
https://news.ycombinator.com/item?id=7462232
https://news.ycombinator.com/item?id=7462223
https://news.ycombinator.com/item?id=7462348
https://news.ycombinator.com/item?id=7462344
https://news.ycombinator.com/item?id=7463279
https://news.ycombinator.com/item?id=7463247
https://news.ycombinator.com/item?id=7466408
https://news.ycombinator.com/item?id=7466402
https://news.ycombinator.com/item?id=7467813
https://news.ycombinator.com/item?id=7467795
https://news.ycombinator.com/item?id=7467784
https://news.ycombinator.com/item?id=7469237
https://news.ycombinator.com/item?id=7469230
https://news.ycombinator.com/item?id=7469219
https://news.ycombinator.com/item?id=7469216
https://news.ycombinator.com/item?id=7469215
https://news.ycombinator.com/item?id=7470681
https://news.ycombinator.com/item?id=7470620
https://news.ycombinator.com/item?id=7473757
https://news.ycombinator.com/item?id=7475103
https://news.ycombinator.com/item?id=7475086
https://news.ycombinator.com/item?id=7476651
https://news.ycombinator.com/item?id=7477616
https://news.ycombinator.com/item?id=7478348
https://news.ycombinator.com/item?id=7478335
https://news.ycombinator.com/item?id=7478329
https://news.ycombinator.com/item?id=7481025
https://news.ycombinator.com/item?id=7482435
https://news.ycombinator.com/item?id=7482404
https://news.ycombinator.com/item?id=7483729
https://news.ycombinator.com/item?id=7483728
https://news.ycombinator.com/item?id=7483723
https://news.ycombinator.com/item?id=7485245
https://news.ycombinator.com/item?id=7485238
https://news.ycombinator.com/item?id=7485206
https://news.ycombinator.com/item?id=7485203
https://news.ycombinator.com/item?id=7487691
https://news.ycombinator.com/item?id=7487685
https://news.ycombinator.com/item?id=7487673
https://news.ycombinator.com/item?id=7487669
https://news.ycombinator.com/item?id=7487667
https://news.ycombinator.com/item?id=7488958
https://news.ycombinator.com/item?id=7488952
https://news.ycombinator.com/item?id=7488950
https://news.ycombinator.com/item?id=7488948
https://news.ycombinator.com/item?id=7490316
https://news.ycombinator.com/item?id=7491026
https://news.ycombinator.com/item?id=7491003
https://news.ycombinator.com/item?id=7492252
https://news.ycombinator.com/item?id=7492943
https://news.ycombinator.com/item?id=7492928
https://news.ycombinator.com/item?id=7493776
https://news.ycombinator.com/item?id=7493716
https://news.ycombinator.com/item?id=7496943
https://news.ycombinator.com/item?id=7496925
https://news.ycombinator.com/item?id=7496923
https://news.ycombinator.com/item?id=7496921
https://news.ycombinator.com/item?id=7497764
https://news.ycombinator.com/item?id=7497758
https://news.ycombinator.com/item?id=7497744
https://news.ycombinator.com/item?id=7497742
https://news.ycombinator.com/item?id=7498462
https://news.ycombinator.com/item?id=7498455
https://news.ycombinator.com/item?id=7498452
https://news.ycombinator.com/item?id=7499254
https://news.ycombinator.com/item?id=7499240
https://news.ycombinator.com/item?id=7501530
https://news.ycombinator.com/item?id=7501519
https://news.ycombinator.com/item?id=7501516
https://news.ycombinator.com/item?id=7502812
https://news.ycombinator.com/item?id=7502804
https://news.ycombinator.com/item?id=7628015
https://news.ycombinator.com/item?id=7628009
https://news.ycombinator.com/item?id=7627995
https://news.ycombinator.com/item?id=7627991
https://news.ycombinator.com/item?id=7629448
https://news.ycombinator.com/item?id=7629428
https://news.ycombinator.com/item?id=7629413
https://news.ycombinator.com/item?id=7629406
https://news.ycombinator.com/item?id=7630669
https://news.ycombinator.com/item?id=7630653
https://news.ycombinator.com/item?id=7631468
https://news.ycombinator.com/item?id=7631447
https://news.ycombinator.com/item?id=7631441
https://news.ycombinator.com/item?id=7634108
https://news.ycombinator.com/item?id=7634104
https://news.ycombinator.com/item?id=7635476
https://news.ycombinator.com/item?id=7635475
https://news.ycombinator.com/item?id=7635470
https://news.ycombinator.com/item?id=7636703
https://news.ycombinator.com/item?id=7636700
https://news.ycombinator.com/item?id=7636687
https://news.ycombinator.com/item?id=7636678
https://news.ycombinator.com/item?id=7637697
https://news.ycombinator.com/item?id=7637690
https://news.ycombinator.com/item?id=7637689
https://news.ycombinator.com/item?id=7637673
https://news.ycombinator.com/item?id=7637667
https://news.ycombinator.com/item?id=7638293
https://news.ycombinator.com/item?id=7638283
https://news.ycombinator.com/item?id=7638238
https://news.ycombinator.com/item?id=7640756
https://news.ycombinator.com/item?id=7640747
https://news.ycombinator.com/item?id=7641898
https://news.ycombinator.com/item?id=7641892
https://news.ycombinator.com/item?id=7641887
https://news.ycombinator.com/item?id=7643067
https://news.ycombinator.com/item?id=7643065
https://news.ycombinator.com/item?id=7643054
https://news.ycombinator.com/item?id=7644208
https://news.ycombinator.com/item?id=7646710
https://news.ycombinator.com/item?id=7647972
https://news.ycombinator.com/item?id=7647962
https://news.ycombinator.com/item?id=7649001
https://news.ycombinator.com/item?id=7648995
https://news.ycombinator.com/item?id=7648988
https://news.ycombinator.com/item?id=7648984
https://news.ycombinator.com/item?id=7649849
https://news.ycombinator.com/item?id=7650241
https://news.ycombinator.com/item?id=7650238
https://news.ycombinator.com/item?id=7651557
https://news.ycombinator.com/item?id=7652264
https://news.ycombinator.com/item?id=7652259
https://news.ycombinator.com/item?id=7653273
https://news.ycombinator.com/item?id=7653808
https://news.ycombinator.com/item?id=7653787
https://news.ycombinator.com/item?id=7653766
https://news.ycombinator.com/item?id=7655279
https://news.ycombinator.com/item?id=7655266
https://news.ycombinator.com/item?id=7656043
https://news.ycombinator.com/item?id=7656017
https://news.ycombinator.com/item?id=7655970
https://news.ycombinator.com/item?id=7656846
https://news.ycombinator.com/item?id=7656800
https://news.ycombinator.com/item?id=7657502
https://news.ycombinator.com/item?id=7658033
https://news.ycombinator.com/item?id=7658030
https://news.ycombinator.com/item?id=7658029
https://news.ycombinator.com/item?id=7658026
https://news.ycombinator.com/item?id=7660785
https://news.ycombinator.com/item?id=7660768
https://news.ycombinator.com/item?id=7660755
https://news.ycombinator.com/item?id=7662237
https://news.ycombinator.com/item?id=7662225
https://news.ycombinator.com/item?id=7662221
https://news.ycombinator.com/item?id=7663552
https://news.ycombinator.com/item?id=7664490
https://news.ycombinator.com/item?id=7664470
https://news.ycombinator.com/item?id=7667554
https://news.ycombinator.com/item?id=7667541
https://news.ycombinator.com/item?id=7667523
https://news.ycombinator.com/item?id=7669037
https://news.ycombinator.com/item?id=7670095
https://news.ycombinator.com/item?id=7670045
https://news.ycombinator.com/item?id=7670973
https://news.ycombinator.com/item?id=7670957
https://news.ycombinator.com/item?id=7670947
https://news.ycombinator.com/item?id=7670939
https://news.ycombinator.com/item?id=7673837
https://news.ycombinator.com/item?id=7673805
https://news.ycombinator.com/item?id=7675264
https://news.ycombinator.com/item?id=7675253
https://news.ycombinator.com/item?id=7675250
https://news.ycombinator.com/item?id=7675243
https://news.ycombinator.com/item?id=7676629
https://news.ycombinator.com/item?id=7676618
https://news.ycombinator.com/item?id=7676609
https://news.ycombinator.com/item?id=7677459
https://news.ycombinator.com/item?id=7677457
https://news.ycombinator.com/item?id=7677456
https://news.ycombinator.com/item?id=7677454
https://news.ycombinator.com/item?id=7677453
https://news.ycombinator.com/item?id=7680140
https://news.ycombinator.com/item?id=7680136
https://news.ycombinator.com/item?id=7680123
https://news.ycombinator.com/item?id=7680118
https://news.ycombinator.com/item?id=7680115
https://news.ycombinator.com/item?id=7681573
https://news.ycombinator.com/item?id=7681572
https://news.ycombinator.com/item?id=7682754
https://news.ycombinator.com/item?id=7682752
https://news.ycombinator.com/item?id=7683569
https://news.ycombinator.com/item?id=7683527
https://news.ycombinator.com/item?id=7686007
https://news.ycombinator.com/item?id=7686001
https://news.ycombinator.com/item?id=7686000
https://news.ycombinator.com/item?id=7685989
https://news.ycombinator.com/item?id=7685986
https://news.ycombinator.com/item?id=7687318
https://news.ycombinator.com/item?id=7687313
https://news.ycombinator.com/item?id=7689018
https://news.ycombinator.com/item?id=7689003
https://news.ycombinator.com/item?id=7691261
https://news.ycombinator.com/item?id=7691241
https://news.ycombinator.com/item?id=7691205
https://news.ycombinator.com/item?id=7691196
https://news.ycombinator.com/item?id=7692038
https://news.ycombinator.com/item?id=7691998
https://news.ycombinator.com/item?id=7694351
https://news.ycombinator.com/item?id=7695912
https://news.ycombinator.com/item?id=7695875
https://news.ycombinator.com/item?id=7695870
https://news.ycombinator.com/item?id=7695851
https://news.ycombinator.com/item?id=7696467
https://news.ycombinator.com/item?id=7696463
https://news.ycombinator.com/item?id=7696841
https://news.ycombinator.com/item?id=7696830
https://news.ycombinator.com/item?id=7696827
https://news.ycombinator.com/item?id=7698818
https://news.ycombinator.com/item?id=7698816
https://news.ycombinator.com/item?id=7698798
https://news.ycombinator.com/item?id=7700216
https://news.ycombinator.com/item?id=7700201
https://news.ycombinator.com/item?id=7700200
https://news.ycombinator.com/item?id=7700193
https://news.ycombinator.com/item?id=7701837
https://news.ycombinator.com/item?id=7701821
https://news.ycombinator.com/item?id=7701800
https://news.ycombinator.com/item?id=7702515
https://news.ycombinator.com/item?id=7704515
https://news.ycombinator.com/item?id=7704500
https://news.ycombinator.com/item?id=7704473
https://news.ycombinator.com/item?id=7705803
https://news.ycombinator.com/item?id=7705798
https://news.ycombinator.com/item?id=7705782
https://news.ycombinator.com/item?id=7706885
https://news.ycombinator.com/item?id=7706883
https://news.ycombinator.com/item?id=7706882
https://news.ycombinator.com/item?id=7706870
The 2 groups are not exactly balanced due to the simple randomization.
One URL suffered a typo and I could not figure out what the original was, so for one block I randomized an extra link (a #6).
The _n_ should be divisible by 5, but is off by TODO 1; I think I must have failed to copy-paste one link at some point.
~~~{.Bash}
for URL in `xclip -o`; do elinks -dump $URL | egrep ' points* by '; sleep 2s; done
~~~
## Analysis
basic analysis:
~~~{.R}
upvoted <- c(3,27,2,19,60,2,69,2,14,6,72,9,2,2,2,57,2,3,31,2,2,32,2,3,2,2,33,2,8,2,2,2,8,4,2,2,8,4,55,2,10,7,327,35,58,70,6,14,3,2,2,79,3,2,100,2,5,4,7,72,2,2,158,2,3,2,73,59,54,2,76,7,141,2,424,11,2,6,2,3,3,3,2,2,2,2,3,126,3,2,2,3,2,3,2,7,4,2,6,2,2,42,2,2,2,3,2,5,77,2,5,5,13,85,19,2,2,2,6,6,2,2,30,72,2,2,6,2,2,4,17,2) - 1
ignored <- c(1,1,1,2,1,2,2,1,1,2,1,2,5,154,1,1,8,2,1,2,1,2,1,1,7,1,1,1,2,329,5,1,1,94,2,1,1,2,1,3,1,1,3,132,1,2,1,2,1,2,2,1,3,2,1,3,1,3,2,5,3,14,62,3,1,1,2,12,112,1,1,2,6,3,2,1,1,1,1,14,1,1,1,2,1,39,4,3,1,1,1,1,9,3,1,1,84,1,5,4,5,1,1,4,270,1,1,1,1,1,5,1,1,1,1,1,3,1,30,5,244,1,1,45,7,4,1,5,1,1,2,1,2,4,1,1,11,61,1,1,1,82,1,2,8,68,7,2,4,89,5,62,25,2,2,2,1,124,179,1,2)
wilcox.test(upvoted, ignored)
...W = 11758, p-value = 0.09914
hn <- data.frame(Scores = c(upvoted, ignored), FrontPage = c(upvoted>10, ignored>10), Upvoted = c(rep(TRUE, length(upvoted)), rep(FALSE, length(ignored))))
library(ggplot2)
qplot(1:length(Scores), sort(Scores), color= hn[order(hn$Scores, decreasing=FALSE),]$Upvoted, data=hn)
library(plotrix)
histStack(hn$Scores, hn$Upvoted, breaks=25)
g1 <- glm(FrontPage ~ Upvoted, family="binomial", data = hn); summary(g1)
...Coefficients:
Estimate Std. Error z value Pr(>|z|)
(Intercept) -1.742 0.221 -7.87 3.5e-15
UpvotedTRUE 0.723 0.296 2.44 0.015
R> exp(coef(g1))
(Intercept) UpvotedTRUE
0.1752 2.0597
R> exp(confint(g1))
2.5 % 97.5 %
(Intercept) 0.1108 0.2649
UpvotedTRUE 1.1579 3.7167
R> Reduce(`*`, exp(coef(g1)), 1)
[1] 0.3608
# a single upvote on /newest is currently estimated as increasing the odds of making the front page by 2.25x (from 16% to 36%)
# or to put it another way, from a mean score of +16 to a mean score of +22
g2 <- glm(Scores ~ Upvoted, family="poisson", data = hn); summary(g2)
...Coefficients:
Estimate Std. Error z value Pr(>|z|)
(Intercept) 2.7907 0.0195 142.9 <2e-16
UpvotedTRUE 0.2914 0.0270 10.8 <2e-16
R> exp(coef(g2))
(Intercept) UpvotedTRUE
16.292 1.338
R> exp(Reduce(`+`, coef(g2), 0))
[1] 21.28
R> library(flexmix)
fit4 <- (stepFlexmix(Scores ~ Upvoted, data=hn, model = FLXMRglmfix(family = "poisson"), k=4, nrep=20))
summary(fit4)
4 : * * * * * * * * * * * * * * * * * * * *
Call:
stepFlexmix(Scores ~ Upvoted, data = hn, model = FLXMRglmfix(family = "poisson"),
k = 4, nrep = 20)
prior size post>0 ratio
Comp.1 0.0643 19 28 0.679
Comp.2 0.4506 133 140 0.950
Comp.3 0.1126 32 90 0.356
Comp.4 0.3725 109 114 0.956
'log Lik.' -1154 (df=11)
AIC: 2330 BIC: 2371
summary(refit(fit4))
$Comp.1
Estimate Std. Error z value Pr(>|z|)
(Intercept) 2.485 0.120 20.7 <2e-16
UpvotedTRUE 1.892 0.123 15.4 <2e-16
$Comp.2
Estimate Std. Error z value Pr(>|z|)
(Intercept) 0.6002 0.0734 8.18 2.9e-16
UpvotedTRUE 5.3254 0.0820 64.95 < 2e-16
$Comp.3
Estimate Std. Error z value Pr(>|z|)
(Intercept) 4.3955 0.0309 142.4 <2e-16
UpvotedTRUE -3.5918 0.0794 -45.3 <2e-16
$Comp.4
Estimate Std. Error z value Pr(>|z|)
(Intercept) 5.4605 0.0292 187.1 <2e-16
UpvotedTRUE -2.3164 0.0712 -32.5 <2e-16
R> exp(0.6002); exp(2.485); exp(4.3955); exp(5.4605)
[1] 1.822
[1] 12
[1] 81.09
[1] 235.2
~~~
Note that the submissions were chosen to maximize the impact of an upvote by upvoting the first 5 links on /newest and hence the most recently submitted: a submission at the very bottom, like #30, will benefit least from an upvote since its time is up and it's almost vanished.
If the effect on the first 5 is TODO, and the effect on the last link (#30) is 0, then a reasonable guess at the mean effect over all links is simply TODO/2.
## Reddit comparison
One might wonder if HN is uniquely aberrant in this lottery; the most natural comparison is the social news site Reddit.
I picked /r/prog (a very large subreddit comparable to HN in size) and manipulated their [/new/](http://www.reddit.com/r/programming/new/) the same way
### Data
upvoted:
http://www.reddit.com/r/programming/comments/20nypu/get_certified_and_become_a_real_licensed_software/
http://www.reddit.com/r/programming/comments/20nvtk/writing_the_perfect_question_by_jon_skeet/
http://www.reddit.com/r/programming/comments/20ns9t/wit_natural_language_for_the_internet_of_things/
http://www.reddit.com/r/programming/comments/20nowy/lazyrouter_translates_requests_into_method_calls/
http://www.reddit.com/r/programming/comments/20ofgx/hiring_front_and_back_end_dev_in_southern/
http://www.reddit.com/r/programming/comments/20ofbs/the_chinese_wikipedia_article_on_quicksort_has/
http://www.reddit.com/r/programming/comments/20o6vp/refreshing_part_of_a_page_using_jquery_load_and/
http://www.reddit.com/r/programming/comments/20o32o/i_have_been_in_my_current_job_for_a_while_and_i/
http://www.reddit.com/r/programming/comments/20q8zs/mozilla_and_unity_bring_unity_game_engine_to_webgl/
http://www.reddit.com/r/programming/comments/20q4la/native_interconnect_the_isthmus_in_the_jvm/
http://www.reddit.com/r/programming/comments/20qjp4/my_experience_with_mob_programming/
http://www.reddit.com/r/programming/comments/20qjeg/on_replacing_objective_c/
http://www.reddit.com/r/programming/comments/20r1ht/illconsidered_choices_coffee_and_its_effects_on/
http://www.reddit.com/r/programming/comments/20qukz/an_interesting_erlang_alternative_to_ruby_on_rails/
http://www.reddit.com/r/programming/comments/20qssi/how_to_nuget_jquery_1_the_right_way/
http://www.reddit.com/r/programming/comments/20rmuc/why_not_automate_your_development_environment_too/
http://www.reddit.com/r/programming/comments/20rl34/design_patterns_cheat_sheet/
http://www.reddit.com/r/programming/comments/20rbem/typesafe_go_reactive_with_java_8/
http://www.reddit.com/r/programming/comments/20r5n0/samsung_releases_sdk_for_wristwatch_apps/
http://www.reddit.com/r/programming/comments/20thjg/john_boyd_and_the_origins_of_agility/
http://www.reddit.com/r/programming/comments/20tghe/announcing_the_oculus_rift_development_kit_2_dk2/
http://www.reddit.com/r/programming/comments/20t58p/ubuntu_1404_now_runs_well_on_the_2013_macbook_air/
http://www.reddit.com/r/programming/comments/20tzve/a_dead_simple_terminal_version_of_2048_with_a/
http://www.reddit.com/r/programming/comments/20tvl3/views_in_java_collections_framework/
http://www.reddit.com/r/programming/comments/20tufm/there_is_no_single_mental_model_for_programming/
http://www.reddit.com/r/programming/comments/20ttvw/accelerated_development_not_planning_is_for_losers/
http://www.reddit.com/r/programming/comments/20trth/creating_a_better_nrpe_agent/
http://www.reddit.com/r/programming/comments/20ua1t/the_history_of_computing_lectures/
http://www.reddit.com/r/programming/comments/20u9gx/kirks_quest_online_coding_contest_the_future_of/
http://www.reddit.com/r/programming/comments/20u7sc/flash_is_dead_long_live_openfl/
http://www.reddit.com/r/programming/comments/20ulsv/refactoring_taming_the_bunnies/
http://www.reddit.com/r/programming/comments/20uezj/open_by_default_releasing_my_campaign_platform_a/
http://www.reddit.com/r/programming/comments/20ud73/not_sure_if_correct_subbreddit_but_heres_a_very/
http://www.reddit.com/r/programming/comments/20u1um/software_laws_2014_pdf/
http://www.reddit.com/r/programming/comments/20v0fq/the_inverted_software_datablock_quick_start/
http://www.reddit.com/r/programming/comments/20wqob/lessons_from_a_silicon_valley_job_search_robert/
http://www.reddit.com/r/programming/comments/20wnxf/you_cant_buy_agile/
http://www.reddit.com/r/programming/comments/20wk67/the_four_deadly_sins_of_linq_data_access_part/
http://www.reddit.com/r/programming/comments/20x6kc/dispelling_the_myth_of_the_floatingpoint_pdf/
http://www.reddit.com/r/programming/comments/20x4rs/changes_in_the_microsoft_mvp_program_mvps_for/
http://www.reddit.com/r/programming/comments/20x4eo/reset_element_css_to_blank_state/
http://www.reddit.com/r/programming/comments/20x1lr/poppy_an_opensource_software_hardware_humanoid/
http://www.reddit.com/r/programming/comments/20xk8y/microsoft_detailed_directx_12_promising_a/
http://www.reddit.com/r/programming/comments/20xhr9/discussion_about_programming_languages_with_the/
http://www.reddit.com/r/programming/comments/20xfqn/appmethod_builds_apps_for_android_ios_windows_and/
http://www.reddit.com/r/programming/comments/20y1vv/handling_nodejs_dependencies_at_box/
http://www.reddit.com/r/programming/comments/20xzc8/hey_freelancers_of_rprogramming_help_fill_out_a/
http://www.reddit.com/r/programming/comments/210540/a_software_engineers_life_in_developing_country/
http://www.reddit.com/r/programming/comments/21047p/efficient_dsp_filters_with_template_haskell/
http://www.reddit.com/r/programming/comments/210nru/get_all_the_things_or_how_not_to_write_a_web_api/
http://www.reddit.com/r/programming/comments/210lyk/the_road_coders_survival_kit/
http://www.reddit.com/r/programming/comments/211fum/a_small_project_i_made_for_implementing_sliders/
http://www.reddit.com/r/programming/comments/2119ag/perl_encryption_primer_block_ciphers/
http://www.reddit.com/r/programming/comments/2131cg/larry_page_id_rather_leave_my_billions_to_elon/
http://www.reddit.com/r/programming/comments/212pkq/mario_ai_using_multiple_random_reinforcement/
http://www.reddit.com/r/programming/comments/212lm8/npm_newly_paranoid_maintainers/
http://www.reddit.com/r/programming/comments/213do3/on_my_birthday_last_year_i_made_an_app_to/
http://www.reddit.com/r/programming/comments/213c7p/bit_gathering_and_base2tobase3_conversion_for/
http://www.reddit.com/r/programming/comments/212l84/programming_on_the_toilet/
http://www.reddit.com/r/programming/comments/215jmx/recursive_queries_in_postgresql/
http://www.reddit.com/r/programming/comments/215dvi/exploring_computergenerated_poetry_and_trying_to/
http://www.reddit.com/r/programming/comments/218z27/michael_feathers_ripeness_for_refactoring/
http://www.reddit.com/r/programming/comments/218yff/popcorn_time_goodbye/
http://www.reddit.com/r/programming/comments/219pvt/goodbye_firefox_marketplace_on_brendan_eich/
http://www.reddit.com/r/programming/comments/219lnd/this_week_in_rust/
http://www.reddit.com/r/programming/comments/219jg6/using_q_and_jquery_promises_to_compose_complex/
http://www.reddit.com/r/programming/comments/21bud5/now_anyone_in_the_world_can_learn_web_development/
http://www.reddit.com/r/programming/comments/21btl8/clojure_16_released/
http://www.reddit.com/r/programming/comments/21brwc/easy_money_code_html5_forms_and_sell_them_here/
http://www.reddit.com/r/programming/comments/21bq6i/solving_puzzles_with_f_or_how_to_impress_your/
http://www.reddit.com/r/programming/comments/21cd09/join_the_resistance_teaser_for_codingame_0426/
http://www.reddit.com/r/programming/comments/21c6r7/using_aws_apis_without_a_server/
http://www.reddit.com/r/programming/comments/21c6o5/how_to_build_speechtotext_chat_with_pubnub_and_wit/
http://www.reddit.com/r/programming/comments/21clv3/what_its_like_to_use_haskell_in_production/
http://www.reddit.com/r/programming/comments/21cos2/six_degrees_of_kevin_bacon_in_six_languages_over/
http://www.reddit.com/r/programming/comments/21ckx6/cooperative_zombies_programming_game/
http://www.reddit.com/r/programming/comments/21eznx/principles_of_good_data_analysis/
http://www.reddit.com/r/programming/comments/21ezh3/javascript_equality_table/
http://www.reddit.com/r/programming/comments/21fj3p/the_exponential_binary_chess_clock_countdown/
http://www.reddit.com/r/programming/comments/21fiz1/how_to_build_a_simple_voting_app_like_hacker_news/
http://www.reddit.com/r/programming/comments/21fhy7/ian_cooper_tdd_where_did_it_all_go_wrong/
http://www.reddit.com/r/programming/comments/21g31f/tip_seamless_restarts_with_unicorn_and_upstart/
http://www.reddit.com/r/programming/comments/21fz4o/google_io_2014/
http://www.reddit.com/r/programming/comments/21gnmn/text_mode_2048_game_in_c_for_your_linux_console/
http://www.reddit.com/r/programming/comments/21gim9/coding_interview_practice/
http://www.reddit.com/r/programming/comments/21gq5o/quick_start_test_driven_development_channel_9/
http://www.reddit.com/r/programming/comments/21g3iq/a_beginners_guide_to_contributing_to_open_source/
http://www.reddit.com/r/programming/comments/21icfm/facebook_with_help_from_google_linkedin_twitter/
http://www.reddit.com/r/programming/comments/21iav6/c_status/
http://www.reddit.com/r/programming/comments/21i7gd/ccv_06_open_sources_near_stateoftheart_image/
http://www.reddit.com/r/programming/comments/21i19h/a_generic_cc_makefile/
http://www.reddit.com/r/programming/comments/21ixzp/bram_cohens_patience_diff_a_brief_summary/
http://www.reddit.com/r/programming/comments/21iwup/programming_laws_and_reality_do_we_know_what_we/
http://www.reddit.com/r/programming/comments/21jron/switching_web_programming_paradigms_with_vertx/
http://www.reddit.com/r/programming/comments/21jpf5/show_reddit_my_own_little_reddit_clone_in_c_and/
http://www.reddit.com/r/programming/comments/21iza1/spatial_data_structures_for_better_map/
http://www.reddit.com/r/programming/comments/21l81x/perl_encryption_primer_hashes/
http://www.reddit.com/r/programming/comments/21l2ya/udi_dahan_looselycoupled_orchestration_with/
http://www.reddit.com/r/programming/comments/21lx00/cube_drone_consistent_hashing/
http://www.reddit.com/r/programming/comments/21lxd9/what_does_writing_directly_to_video_memory_really/
http://www.reddit.com/r/programming/comments/21n1zs/why_enterprise_java_beans/
http://www.reddit.com/r/programming/comments/21mx0b/marching_squares_for_procedural_tile_placement/
http://www.reddit.com/r/programming/comments/21mvuv/should_everybody_learn_to_code_computerphile/
http://www.reddit.com/r/programming/comments/21o6xt/the_software_equality_logo/
http://www.reddit.com/r/programming/comments/21o6bz/codeplay_introduction_to_sycl_abstraction_layer/
http://www.reddit.com/r/programming/comments/21o6bb/bannalia_trivial_notes_on_themes_diverse/
http://www.reddit.com/r/programming/comments/21o4et/artificial_intelligence_where_to_put_your_time/
http://www.reddit.com/r/programming/comments/21od4e/participate_in_10_hours_development_of_a_game/
http://www.reddit.com/r/programming/comments/21o21d/introduction_to_artificial_neural_networks_part_2/
http://www.reddit.com/r/programming/comments/21nxpv/working_without_fear_on_test_driven_code/
http://www.reddit.com/r/programming/comments/21ow20/introducing_rwolfram_a_subreddit_dedicated_to_the/
http://www.reddit.com/r/programming/comments/21ooex/wic_file_open_dialog_using_ifileopendialog/
http://www.reddit.com/r/programming/comments/21nwak/html5_and_javascript_game_engine_libraries/
http://www.reddit.com/r/programming/comments/21quwy/tools_for_building_a_better_software_development/
http://www.reddit.com/r/programming/comments/21rn0p/bringing_simd_to_javascript/
http://www.reddit.com/r/programming/comments/21rfyf/class_hierarchies_dont_do_that/
http://www.reddit.com/r/programming/comments/21r3tc/lawsuit_waze_owes_opensource_programmers_150/
http://www.reddit.com/r/programming/comments/21qvp8/write_your_own_ai_for_2048/
http://www.reddit.com/r/programming/comments/21s7tn/the_strangeness_of_scale_at_twitter/
http://www.reddit.com/r/programming/comments/21smyy/crittercism_provides_insight_into_why_your_app/
http://www.reddit.com/r/programming/comments/21skaq/scrubbed_digitalocean_droplets_still_recoverable/
http://www.reddit.com/r/programming/comments/21shnk/convert_your_generators_into_coroutines_with_a/
http://www.reddit.com/r/programming/comments/21se3g/how_do_i_convert_a_batch_file_into_a_powershell/
http://www.reddit.com/r/programming/comments/21ttxs/turings_sunflower/
http://www.reddit.com/r/programming/comments/21tszv/increasing_performance_with_static_polymorphism/
http://www.reddit.com/r/programming/comments/21tqge/summary_of_the_actor_model/
http://www.reddit.com/r/programming/comments/21tnkc/writing_micro_compiler_in_ocaml/
http://www.reddit.com/r/programming/comments/21ubo9/api_driven_development/
http://www.reddit.com/r/programming/comments/21uap9/programming_on_mobile_devices/
http://www.reddit.com/r/programming/comments/23zlqt/everything_in_javascript_is_a_value/
http://www.reddit.com/r/programming/comments/23zhe4/devs_and_depression_by_greg_baugues/
http://www.reddit.com/r/programming/comments/2417sh/how_to_upload_a_file_using_aspnet_mvc_and_ajax/
http://www.reddit.com/r/programming/comments/2410b0/hypermedia_as_the_engine_of_application_state/
http://www.reddit.com/r/programming/comments/240wbx/lazarus_free_pascal_ide_122_is_released_and_built/
http://www.reddit.com/r/programming/comments/240tkz/https_share_python_script_that_allows_you_to/
http://www.reddit.com/r/programming/comments/240r8r/teasafe_a_userspace_encrypted_filesystem_cc/
http://www.reddit.com/r/programming/comments/241fmb/dont_feel_guilty_about_not_contributing_to_open/
http://www.reddit.com/r/programming/comments/241jp9/spotify_engineering_culture_part_1/
http://www.reddit.com/r/programming/comments/241rx7/why_do_software_projects_fail/
http://www.reddit.com/r/programming/comments/241iav/accessing_standard_c_types_in_haskell/
http://www.reddit.com/r/programming/comments/241cnt/doing_ab_testing_with_apache_httpd/
http://www.reddit.com/r/programming/comments/240n7q/rust_by_example/
http://www.reddit.com/r/programming/comments/240k9o/c_tutorials/
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