something awful had a forum for crappy users, called Fuck Youself and Die, but eventually the trolls and shitty users grew and the site was suffering, the mod war with those users is what 4chan was born from.
4chan was not a revenge website against SA, this is some kind of narrative written by later generations of twitter journalists. A revenge forum would have the same $10 to sign up rule.
(But the SA admins did delete the 4chan thread on the day its traffic surpassed SA.)
