Posted: 26/03/2013 at 15:54
Ignore is a brilliant feature, because it puts you in control.
If you even start to argue back, then that's just what people want you to do. Arguing, or even commenting, plays into their hands.
By clicking IGNORE you simply despatch them into a black hole in the ethernet.
It's useful if someone spots such a person, and points it out. But it's not useful if lots of people join in, all arguing with the troll, and the argument snowballs.