When i think i trolls, i navigate to http://8ch.net/ and then check the /cow/ and /baphomet/-boards. From my perspective of things, /cow/ actively seeks out e-celebs and give them attention enough to make the victim make a fool of themselves and "milk" them until they get bored. Look into Peter Coffin and his doll girlfriend for more info.
/baphomet/ on the other hand actively seeks to destroy people they do not like. For instance, someone finds a mormon that officially hates gays. The victim gets doxxed, they find his or hers relatives and send them "i am concerned about his gay behaviour"-mails, order subcriptions to various gay maganizes to his company adress, they create fake twitter accounts and spam them about this guys behaviour, create entries about him in encyclopedia dramatica and link them on facebook for his friends. The "fun" part comes from the guys meltdown. Then they move on.
Both boards do not like each due these, uh, philosophical differences. They think that GG is a bunch of "moralfags" and have attacked several pro-GG people as well (like Lo-Ping) and almost every other board on 8chan hates or avoids them.
Just my 2 cents.