Having built all this experience of wikis in a corporate setting, I'm now a self-styled "wiki consultant" - and actually succeed in making a bit of money at it (Not a lot, though. I can't recommend it.)
I've mostly contributed to TWiki, where I authored several of the plugins, but I'm interested in the whole wiki thing. I can be reached at email@example.com, or I'm often on #twiki on IRC.
Welcome, Crawford! -- SunirShah