There's also https://jitjot.net

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.