Craplist.net:
I wouldn't say I'm a huge fan of the Grand Theft Auto series of video games. I've played III and Vice City and San Andreas and they're ok. However I love the series now for just some little gem they packed away in IV, which I haven't played yet. According to the blog post I linked too there's an in game 'internet' in GTA IV with it's own version of craigslist called Craplist. Here's how Craplist is described in GTA IV...
Craplist was started in San Fierro in 1995 by some basement dwelling sociopaths with the simple mission of creating a computer-based online forum where users can sell stolen bicycles and meet up at lunch time to give a stranger head. ... Capitalists don't understand us. Newspapers hate us. Stalkers love us. Craplist is here to stay. We are you.
Can it really be called a parody when it's basically true?