From urbandictionary.com

Forum Troll:
1. Someone who gets pleasure by typing annoying/controversial/offensive words at strangers on internet forums, for them to read.
2. Someone who actively watches a forum. Not to be confused with a lurker, or just a forum frequenter, the troll annoys, pesters, and generally insults any thread they open.

I realize the current contest is winding down, but why do some refuse to be civil? I humbly suggest all to just ignore their posts or comments. They will loose interest soon enough and scurry off to some dark corner of the internet where they will fester on their own lonely selves.