There have been at least three attempts to create a wiki site especially for conspiracy theories. One is Conspiracy Wiki, and the second is Steve Jackson Games' Fnord: The Conspiracy Wiki. Both of these wikis are still there, but they have both stagnated from neglect. However, a third conspiracy wiki is still chugging along though, slowly and casually. More modest than the first two, and more hobby-like, TinWiki has been online since 2006, and it is guaranteed to have updates (even small ones) every day. This suggests this site is a labor-of-love hobby by its founder rather than a money-making venture.
I like the logo showing a blank white ball wearing a tinfoil hat.
TinWiki is attempting to gather all of the best known conspiracies under one roof, treating them factually with a Wikipedia-like "neutral point of view." (Fortunately, they're more lax than Wikipedia when it comes to providing detailed references and evidences to back every single listed claim.) There's even an entry on the Church of the SubGenius (TinWiki: Church of the SubGenius). There isn't a Discordian page on there yet (though there's one article called "Illuminatustrilogy"), though this should hopefully change soon.