The blog entry explaining how to use it is here: http://sbknull.blogspot.com
It's built on ASP.net MVC. We're thinking of open sourcing it.
It saves a new version of your code with each save and you have a repository of code entries via your user link:
https://jitjot.net/u/acoma https://jitjot.net/u/mlatham
Of course you can just park code there if you'd like.