RailsConf Europe: David Anderson and Larry Baltz: A Cheeky Wiki
David and Larry presented Informl, which is a sort of open source DabbleDB/Jotspot-style Wiki based on Rails. Similar to Twiki, the user can edit a Wiki page and include form elements. The text is parsed using a generic parser engine called Tartan. Informl creates both metadata entries as well as “real” tables for every user-created element, using Rails migrations. Not uninteresting.