MoinMoin is a Python WikiClone, based on PikiPiki. The name is a common German slang expression explained on the MoinMoin page. If you run a Wiki using MoinMoin, please add it to the MoinMoinWikis page. Contributed code is on the MacroMarket, ActionMarket and ParserMarket pages.
You can edit any page by pressing the link at the bottom of the page. Capitalized words joined together form a WikiName, which hyperlinks to another page. The highlighted title searches for all pages that link to the current page. Pages which do not yet exist are linked with a question mark: just follow the link and you can add a definition.
Interesting starting points: