I set up a wiki with the usual old Media Wiki which is now used by wikipedia (check out the article here). But looking at it, and remembering how much I hate wiki markup, I’m thinking of switching over to MoinMoin, a python based wiki with a wysiwyg editor. I might set them both up. Wiki users (I’m looking you, microdec developers!) should give me feedback as you’re using the system and let me know what you prefer.
Update: new wiki up here!