A troll is someone who is here only to cause frustration and to provoke an emotional response.
But, just because you get emotional, does not mean that they are a troll.
Football fans are passionate and sometimes not very nice. But just because they might make you frustrated or angry does not mean that they are not also a fan.
I came across an interesting blog about this today: http://www.blogworld...t-surprise-you/
That made an important point
A troll is not angry or otherwise emotional about the topic. In other words, they have no horse in this race, nor do they care about the “outcome” of the debate. They will say whatever gets the biggest reaction.
So, that person that frustrates you might be a troll but, maybe not. Maybe they are something worse.
In any event, it's best to stay away from those posters who provoke you