Why would someone do that
A few members of the Darkfall community once held a 'raid' on AgeOfTime (it kinda backfired), this leads me to assume that they have done it to other games/communities too, some which may not have been too forgiving.
Of course, they could have just spurred up the hate/attention of 4chan and by their sheer number they have managed to DoS them (accidentally or purposely, I don't know).