Snipt.net is the one I use and it keeps me coming back because it allows me to have my own personal snippets (which can be either public or private). Perhaps you should let people register and do the same (or "flag this revision for me" if you want everything public?)
The plan was to allow users to create public/private wikis, very much like Reddit's subreddit system. The creator would set access permissions, so it could work as a personal library, or a collection for a blog/BBS/open source project. Any suggestions on this would be especially helpful... I'm working on implementing this over the next few days.
