Question on the Worst Troll I have seen.

Although originally a non-offensive reference to fishing by trolling for comments or suggestions, the term in Internetspeak has evolved and now refers to someone who engages in discussions purely to provoke or annoy. Because trolls take away from productive work, the ideal response is to starve the troll of attention by ignoring it and going about your usual business. People being people, though, someone usually takes the bait, which is why trolls are so notorious.

http://rationalwikiDOTorg/wiki/Don%27t_feed_the_Troll