Yes - 4Chan is the new FB. It's deliberately unappealing, it's the new generation.
I liken Mys[ace/bebo/friendster/facebook/linked-in/4Chan/whatever to bars and nightclubs. They can get popular for a while, even wildly popular, but eventually they go out of fashion. Those 'pubs' with a slower cadence like Linked-in will take longer to die, but will also never reach the dizzy heights of the biggest 'clubs' like mySpace and Facebook.
