In Internet slang, a troll is someone who posts inflammatory, extraneous, or off-topic messages in an online community, such as an online discussion forum, chat room or blog, with the primary intent of provoking other users into an emotional response[1] or of otherwise disrupting normal on-topic discussion.[2]
...
http://en.wikipedia.org/wiki/Forum_troll
...
Now here is a good subject for debate ..............
who will start ...............clay