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diff --git a/about/index.html b/about/index.html
@@ -185,6 +185,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -221,10 +225,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>

diff --git a/atom.xml b/atom.xml
@@ -4,7 +4,7 @@
   <title><![CDATA[atodorov.org - you can logoff, but you can never leave]]></title>
   <link href="http://atodorov.org/atom.xml" rel="self"/>
   <link href="http://atodorov.org/"/>
-  <updated>2015-07-01T12:17:16+03:00</updated>
+  <updated>2015-07-27T13:34:41+03:00</updated>
   <id>http://atodorov.org/</id>
   <author>
     <name><![CDATA[Alexander Todorov]]></name>
@@ -13,6 +13,53 @@
   <generator uri="http://octopress.org/">Octopress</generator>
 
 
+  <entry>
+    <title type="html"><![CDATA[Call for Ideas: Graphical Test Coverage Reports]]></title>
+    <link href="http://atodorov.org/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/"/>
+    <updated>2015-07-27T13:04:00+03:00</updated>
+    <id>http://atodorov.org/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports</id>
+    <content type="html"><![CDATA[<p>If you are working with Python and writing unit tests chances are you are
+familiar with the <a href="http://nedbatchelder.com/code/coverage/">coverage</a> reporting
+tool. However there are testing scenarios in which we either don&#8217;t use unit tests
+or maybe execute different code paths(test cases) independent of each other.</p>
+
+<p>For example, this is the case with installation testing in Fedora. Because anaconda
+- the installer is very complex the easiest way is to test it live, not with unit tests.
+Even though we can get a coverage report (anaconda is written in Python) it reflects
+only the test case it was collected from.</p>
+
+<p><code>coverage combine</code> can be used to combine several data files and produce an aggregate
+report. This can tell you how much test coverage you have across all your tests.</p>
+
+<p>As far as I can tell Python&#8217;s coverage doesn&#8217;t tell you how many times a particular
+line of code has been executed. It also doesn&#8217;t tell you which test cases executed
+a particular line
+(see <a href="https://bitbucket.org/ned/coveragepy/pull-request/59">PR #59</a>).
+In the Fedora example, I have the feeling many of our tests are touching the same
+code base and not contributing that much to the overall test coverage.
+So I started working on these items.</p>
+
+<p>I imagine a script which will read coverage data from several test executions
+(preferably in JSON format,
+<a href="https://bitbucket.org/ned/coveragepy/pull-request/60">PR #60</a>) and produce a
+graphical report similar to what GitHub does for your commit activity.</p>
+
+<p>See an example <a href="https://s3.amazonaws.com/atodorov/blog/pykickstart_report.html">here</a>!</p>
+
+<p>The example uses darker colors to indicate more line executions, lighter for less
+executions. Check the HTML for the actual numbers b/c there are no hints yet.
+The input JSON files are
+<a href="https://s3.amazonaws.com/atodorov/blog/coverage_json_reports.tar.gz">here</a> and
+the script to generate the above HTML is at
+<a href="https://github.com/atodorov/fedora-scripts/blob/master/coverage-tool">GitHub</a>.</p>
+
+<p>Now I need your ideas and comments!</p>
+
+<p>What kinds of coverage reports are you using in your job ? How do you generate them ?
+How do they look like ?</p>
+]]></content>
+  </entry>
+
   <entry>
     <title type="html"><![CDATA[Open Data Event Coming to Sofia]]></title>
     <link href="http://atodorov.org/blog/2015/07/01/open-data-event-coming-to-sofia/"/>
@@ -2173,63 +2220,6 @@ the system has. I&#8217;ve still not figured that out entirely.</li>
 
 <p>For more information please read Chapter 25 from Red Hat&#8217;s
 <a href="https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Storage_Administration_Guide/ch25.html">Storage Administration Guide</a></p>
-]]></content>
-  </entry>
-
-  <entry>
-    <title type="html"><![CDATA[Mining E-mail Identities with Gravatar]]></title>
-    <link href="http://atodorov.org/blog/2015/03/16/mining-e-mail-identities-with-gravatar/"/>
-    <updated>2015-03-16T23:16:00+02:00</updated>
-    <id>http://atodorov.org/blog/2015/03/16/mining-e-mail-identities-with-gravatar</id>
-    <content type="html"><![CDATA[<p>Recently I&#8217;ve laid my hands on a list of little over 7000 email addresses.
-This begs the question how much of them are still in use and what for ?</p>
-
-<p>My data is not fresh so I&#8217;ve uploaded the list to Facebook and created a custom
-audience. 2400 of 7129 addresses were recognized - 30% of these addresses are
-on Facebook and easy to target! Need to figure out which ones.</p>
-
-<p>I could have tried some sort of batch search combined with the custom audience
-functionality but I didn&#8217;t find an API for that and decided not to bother.
-Instead I&#8217;ve opted for Gravatar.</p>
-
-<figure class='code'><figcaption><span>gravatars.sh </span></figcaption>
- <div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
-<span class='line-number'>2</span>
-<span class='line-number'>3</span>
-<span class='line-number'>4</span>
-<span class='line-number'>5</span>
-<span class='line-number'>6</span>
-</pre></td><td class='code'><pre><code class='bash'><span class='line'><span class="c">#!/bin/bash</span>
-</span><span class='line'>
-</span><span class='line'><span class="k">while </span><span class="nb">read </span>LINE; <span class="k">do</span>
-</span><span class='line'><span class="k">    </span><span class="nv">HASH</span><span class="o">=</span><span class="sb">`</span><span class="nb">echo</span> -n <span class="nv">$LINE</span> | md5sum | cut -f1 -d<span class="s1">&#39; &#39;</span><span class="sb">`</span>
-</span><span class='line'>    wget <span class="s2">&quot;http://gravatar.com/avatar/$HASH&quot;</span> -O <span class="s2">&quot;$LINE&quot;</span>
-</span><span class='line'><span class="k">done</span> &lt; /dev/stdin
-</span></code></pre></td></tr></table></div></figure>
-
-
-<p>Feed <code>gravatars.sh</code> with the email list and it will download all images to the
-current working directory and use the address as the file name. After
-<code>md5sum *@* | cut -f1 -d' ' | sort | uniq -c</code> I quickly noticed the following:</p>
-
-<ul>
-<li>4563 addresses have the <code>a1719586837f0fdac8835f74cf4ef04a</code> check-sum; These are
-not found on Gravatar.</li>
-<li>2400 addresses have the <code>d5fe5cbcc31cff5f8ac010db72eb000c</code> check-sum. These are
-addresses which are registered with Gravatar but didn&#8217;t bother to change the default
-image.</li>
-<li>166 remaining addresses, each with a different check-sum. These have their custom
-pictures uploaded to Gravatar and probably much more actively used.</li>
-</ul>
-
-
-<p>A second check with Facebook reveals 900 out of these 2566 addresses were recognized.
-This begs the question is Facebook showing incorrect stats or are there 1500 addresses
-using Gravatar (or have used at some point) which are not on Facebook ?</p>
-
-<p>At least some of the remaining 4000 addresses are still active and used to send emails.
-Next I will be looking for ways to identify them. Any suggestions and comments are more
-than welcome!</p>
 ]]></content>
   </entry>
 

diff --git a/blog/2011/03/14/usb-multi-seat-on-red-hat-enterprise-linux-6/index.html b/blog/2011/03/14/usb-multi-seat-on-red-hat-enterprise-linux-6/index.html
@@ -494,6 +494,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -530,10 +534,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>

diff --git a/blog/2011/09/15/protected-rpm-repositories-with-yum-and-ssl/index.html b/blog/2011/09/15/protected-rpm-repositories-with-yum-and-ssl/index.html
@@ -399,6 +399,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -435,10 +439,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>

diff --git a/blog/2012/02/10/spinning-up-a-development-instance-on-openshift/index.html b/blog/2012/02/10/spinning-up-a-development-instance-on-openshift/index.html
@@ -250,6 +250,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -286,10 +290,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>

diff --git a/blog/2012/02/18/how-to-update-dependencies-on-openshift/index.html b/blog/2012/02/18/how-to-update-dependencies-on-openshift/index.html
@@ -328,6 +328,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -364,10 +368,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>

diff --git a/blog/2012/03/09/how-to-get-to-the-openshift-shell/index.html b/blog/2012/03/09/how-to-get-to-the-openshift-shell/index.html
@@ -261,6 +261,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -297,10 +301,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>

diff --git a/blog/2012/03/14/openshift-cron-takes-over-celerybeat/index.html b/blog/2012/03/14/openshift-cron-takes-over-celerybeat/index.html
@@ -357,6 +357,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -393,10 +397,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>

diff --git a/blog/2012/04/17/using-openshift-as-amazon-cloudfront-origin-server/index.html b/blog/2012/04/17/using-openshift-as-amazon-cloudfront-origin-server/index.html
@@ -334,6 +334,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -370,10 +374,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>

diff --git a/blog/2012/05/19/cross-domain-ajax-served-from-cdn/index.html b/blog/2012/05/19/cross-domain-ajax-served-from-cdn/index.html
@@ -364,6 +364,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -400,10 +404,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>

diff --git a/blog/2012/07/12/combining-pdf-files-on-the-command-line/index.html b/blog/2012/07/12/combining-pdf-files-on-the-command-line/index.html
@@ -245,6 +245,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -281,10 +285,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>

diff --git a/blog/2012/07/13/mission-impossible-abrt-bugzilla-plugin-on-rhel6/index.html b/blog/2012/07/13/mission-impossible-abrt-bugzilla-plugin-on-rhel6/index.html
@@ -285,6 +285,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -321,10 +325,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>

diff --git a/blog/2013/01/28/hello-world/index.html b/blog/2013/01/28/hello-world/index.html
@@ -237,6 +237,10 @@ <h1>
   <h1>Recent Posts</h1>
   <ul id="recent_posts">
 
+      <li class="post">
+        <a href="/blog/2015/07/27/call-for-ideas-graphical-test-coverage-reports/">Call for Ideas: Graphical Test Coverage Reports</a>
+      </li>
+
       <li class="post">
         <a href="/blog/2015/07/01/open-data-event-coming-to-sofia/">Open Data Event Coming to Sofia</a>
       </li>
@@ -273,10 +277,6 @@ <h1>Recent Posts</h1>
         <a href="/blog/2015/04/29/rhel-7-repository-for-macbook-air/">RHEL 7 Repository for MacBook Air</a>
       </li>
 
-      <li class="post">
-        <a href="/blog/2015/04/29/fixing-display-brightness-on-macbook-air-with-rhel-7/">Fixing Display Brightness on MacBook Air with RHEL 7</a>
-      </li>
-
   </ul>
 </section>
 <section>