content: I think the meaning of troll has changed a lot as well to mean someone who just annoys you.  If you are really getting trolled you will never know it unless they do cross that line to where they make it obvious.  Typically they just find the alternative viewpoint of someone or find something that bothers a person or group and subtly do and say things to incite a reaction of any kind, it's much more of a mind game.  Real trolling is a goddamn art form, and your examples of trolls are just as idiotic as the people who send death threats.