Yeah, you've probably heard of Uncyclopedia, Encyclopedia Dramatica and Conservapedia. But have you heard of these? If you're a fan of Illogicopedia or just parody in general then you might want to check some of these parody wikis out, maybe even create an account there.
The Devil's Wiki
Conveying just the facts in a satirical style, this wiki discourages misinformation and encourages new, more devilish slants on facts. A brand new wiki, it's on the lookout for new members.
Incoherent Babbling wiki
In the old days of Illogicopedia, we considered proposing a merge with these guys. What the title says, though the wiki is heavily attached to an [adult swim] forum: "if an outsider can't understand it, we have done our job...or just haven't done anything at all."
Encyclopedia of Stupid
Every article starts with the line 'you know what's stupid?' and goes from there really. Recommended if you're bored or are one of those people who think everything is stupid.
How odd. A spinoff from Illogicopedia and Uncyclopedia, it's decidedly weird. Anything odd goes, a bit like Illogicopedia but less blatant in its nonsensical content. Still in its infant stages, but worth a look nonetheless.
Compiled from the Illogicopedia forums and my brain. As ever, lemme know your thoughts in the comments section.