Troll Sites
While many webmasters and forum administrators consider trolls a scourge on their sites, some websites welcome them. For example, a New York Times article discussed troll activity at 4chan and at Encyclopedia Dramatica, which it described as "an online compendium of troll humor and troll lore". This site and others are often used as a base to troll against sites that their members can not normally post on. These trolls feed off the reactions of their victims because "their agenda is to take delight in causing trouble".
Read more about this topic: Don't Feed The Troll