MeatBall
ThoughtStorms Wiki
Famous community wiki started by SunirShah.
Still on classic UseMod AFAICT.
Start http://meatballwiki.org/wiki/ and http://meatballwiki.org/wiki/RecentChanges
(note it's Meatball, not MeatBall for the InterWiki)
See also :
- ThoughtStormsVsMeatBall for a comparison of the philosophy of there and here.