h a l f b a k e r y
What's a nice idea like yours doing in a place like this?
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
or get an account
[Edited: removed my lame examples]
Many "addons" can be provided by third party developers. Make it compulsory to be open source :-) Just like the Google APIs