LessigWiki

LessigWiki is legal activist-scholar Lawrence Lessig's official wiki. I first became involved with it in December 2010, when they were having great difficulty with spam. I offered them some spam-fighting techniques I had developed for my own projects, and ended up taking over hosting of the site and moving it to my own server. I have migrated it to new servers two or three times since then, upgrading MediaWiki each time.