It seems some people honestly don't understand some of the people on this forum, here is some background info to help you out:
In Internet slang, a troll ( /ˈtroʊl/, /ˈtrɒl/) is someone who posts inflammatory, extraneous, or off-topic messages in an online community, such as a forum, chat room, or blog, with the primary intent of provoking readers into an emotional response or of otherwise disrupting normal on-topic discussion. The noun troll may refer to the provocative message itself, as in: "That was an excellent troll you posted."
Trolls can be costly in several ways. A troll can disrupt the discussion on a newsgroup, disseminate bad advice, and damage the feeling of trust in the newsgroup community. Furthermore, in a group that has become sensitized to trolling – where the rate of deception is high – many honestly naïve questions may be quickly rejected as trollings. This can be quite off-putting to the new user who upon venturing a first posting is immediately bombarded with angry accusations. Even if the accusation is unfounded, being branded a troll is quite damaging to one's online reputation.
http://en.wikipedia.org/wiki/Troll_(Internet)
"Why do people troll?
People troll to get a rise out of people. They think it's funny."
http://wiki.answers.com/Q/Why_do_people_troll