Roll your own sprunge on your domain
This is inspired by and shares some code with http://sprunge.us.
This is a simple Flask app that uses Pygments to highlight the code. It uses MongoDB to store the snippets. Heroku gives you 240MB of MongoDB storage for free. All you need is a free Heroku account and a bit of time.
Make sure you've got Heroku's command line utility installed and configured first.
$ git clone git://github.com/honza/heroku-sprunge.git
$ cd heroku-sprunge
$ ./bootstrap.sh
Modify the run.sh
file with your settings and use it to run the app locally.
Here is an example of the app running on Heroku:
http://quiet-sky-4922.herokuapp.com/
BSD, short and sweet.