There's a massive misconception about internet trolls in that the word troll is bandied about (specifically in the mainstream media) whenever a person is horribly abusive to someone else online. That isn't what a troll is. That is what a dickhead is.

Watching a real troll at work can be a thing of beauty when done well- a troll is someone who will, one way or another, wind someone up to the extent that they (the trolling target) will expose themselves as angry, abusive, intolerant, racist, or even just plain fucking stupid.

Trolling has been going on on TV for years now - remember the original Ali-G interviews? Louis Theroux? Brass Eye? All massively trolled to awesome effect.

There's a guy who I think has been trolling AX pretty well for a while now (you can speculate between yourselves who I think he is) - he started off well, but now I'm not sure if he is a troll or if he's an idiot. The sign of a good troll in my book.