Ever need to share code-snippets with the twittersphere? If so, Codepaste is for you. It's my favorite new tool for getting code out there in a really low-friction manner. It has really nice syntax coloring support, allows reviewers to comment, and most importantly it associates pastes with a profile so that you or your users can search or even subscribe to your own personalized RSS feed.
I use it quite a bit as a teaching / learning tool. Often when I am prototyping different ideas, I use CodePaste as a means to get it out there to gather feedback.
If you like sharing code, go check it out.
Kudos to Rick Strahl and the team (if there is one) for an awesome product!