I work at [Oops]
where we run a lot of UseModWiki
s; some are public, like [OopsWiki]
(in Swedish), but most of them are private and used for coordinating projects. I really recommend this!
Fan of Wiki:ExtremeProgramming and Wiki:TestFirstProgramming. One of the two creators of Wiki:ObjcUnit.
I keep a blog at http://tesugen.com.