Internet Troll:
A person whose sole purpose in life is to seek out people to argue with on the internet over extremely trivial issues. Such arguments can happen on blogs, Facebook, Myspace and a host of others.
The best thing you can do to fight an internet troll is to not answer..or report them.
"God, Jeromy won't stop posting about Larry's bad spelling in that conversation."
"Yeah, I know, what a Internet Troll."
by Person#98765 June 21, 2009, www.urbandictionary.com.
Urban dictionary is wrong on that one.
The best description for It is "People who say things to provoke an emotional response from someone." It's simple, concise and not specific to the internet, though it made it easier and more widespread.
The best trolls are those whom cannot be trolled themselves, which in turn trolls ye who attempts the troll.
There is an art to it, the original posting here wasn't bad actually, but I feel a forum such as this it Is too easy to troll as there are some older gentleman who aren't the best with the internet; especially realizing when they've been trolled or not.
Edit:
If anyone wants to know if they're being trolled or not, I will offer the free service of letting you know. Just, mention my name or, message me the thread. I'll sort it out.
Additional trolling fee's may apply.