Found this and thought it would be of interest: Different breed of Trolls >> The Vulgar Troll. These, the crudest of all trolls, make no attempt to hide their species. Often, they make racist comments, or they may post porn and other spam. Vulgars usually confine their comments merely to primitive, profane, off-topic observations. When you log into the Really Profound Serious Philosophical Discussions board and see the post, "I smell my farts," you've spotted the Vulgar Troll. Other species of troll sometimes revert to this form when cornered. The Deceptive or "Classic" Troll. More sophisticated but often easily identified and exposed, the Classic Troll gratifies his ego by pretending to be someone or something he or she is not. Classics make up elaborate stories about themselves, sometimes weaving some amounts of truth into their lies. As a web of lies is difficult to build with consistency, however, Classics are often "outed" by other forumites. When this happens, Classic Trolls have a bag of tricks to which they turn: – Classic Troll Tactic Number 1: If the heat gets too much for you, claim it was all "a joke." In this way you can excuse any and all deceit by claiming people just weren't smart enough to "get" the humor of it. – Classic Troll Tactic Number 2: Create another account, and log on pretending to be someone else, in order to show support for the Troll in Question (TiQ). These puppet accounts sometimes claim to be disinterested third parties. At other times they pretend to be "friends" of the TiQ. – Classic Troll Tactic Number 3: When your lies paint you into a corner, claim that your little brother, or some unnamed friend, has commandeered your account and made you look foolish. This technique can also be applied in claiming that the puppet account(s) you created may not, in fact, be disinterested third parties or friends, but that they are your relatives ("little brother" is most common) only trying to help support you. – Classic Troll Tactic Number 4: When nothing else works, claim that now, finally, you're telling the truth about all the lies you told before. Make up a fresh set of lies, and throw yourself on the mercy of the forumites. – Classic Troll Tactic Number 5: When all else fails, claim to be leaving forever. Trolls who claim they are leaving never do, of course; you can bet that anyone who proclaims, "I'm never coming back here," will most certainly at least check back for responses, and probably will not be able to resist posting again. – Classic Troll Tactic Number 6: Have a tantrum. When all their other tricks are exhausted, Classic Trolls will become angry and start shouting. Often they revert to Vulgar Trolls when this happens. – Classic Troll Tactic Number 7: The insincere apology. Similar to Tactic 4, this involves pretending to repent for one's trolling and is accompanied often by great melodrama. Insincere troll apologists hope that they'll be forgiven if only they act disgusted enough with their own behavior. The Contrarian Troll. A sophisticated breed, Contrarian Trolls frequent boards whose predominant opinions are contrary to their own. A forum dominated by those who support firearms and knife rights, for example, will invariably be visited by Contrarian Trolls espousing their beliefs in the benefits of gun control. It is important to distinguish between dissenters and actual Contrarian Trolls, however; the Contrarian is not categorized as a troll because of his or her dissenting opinions, but due to the manner in which he or she behaves: – Contrarian Warning Sign Number One: The most important indicator of a poster's Contrarian Troll status is his constant use of subtle and not-so-subtle insults, a technique intended to make people angry. Contrarians will resist the urge to be insulting at first, but as their post count increases, they become more and more abusive of those with whom they disagree. Most often they initiate the insults in the course of what has been a civil, if heated, debate to that point. – Contrarian Warning Sign Number Two: Constant references to the forum membership as monolithic. "You guys are all just [descriptor]." "You're a lynch mob." "You all just want to ridicule anyone who disagrees with you." – Contrarian Warning Sign Number Three: Intellectual dishonesty. This is only a mild indicator that is not limited to trolls, but Contrarians display it to a high degree. They will lie about things they've said, pull posts out of context in a manner that changes their meanings significantly, and generally ignore any points for which they have no ready answers. – Contrarian Warning Sign Number Four: Accusing the accusers. When confronted with their trolling, trolls immediately respond that it is the accusers who are trolls (see Natural Predators below). Often the Contrarian will single out his most vocal opponent and claim that while he can respect his other opponents, this one in particular is beneath his notice. – Contrarian Warning Sign Number Five: Attempts to condescend. The Contrarian will seek refuge in condescending remarks that repeatedly scorn his or her critics as beneath notice – all the while continuing to respond to them. – Contrarian Warning Sign Number Six: One distinctive mark of Contrarian Trolls is that every thread in which they dissent quickly devolves into a debate about who is trolling whom. In the course of such a debate the Contrarian will display many of the other Warning Signs mentioned above.