Well, I've been here a long time, but I've never really worked out how to define a "troll".
Is it someone who posts just to provoke an angry response? If so how does one determine whether they are sincere or not?
Is it someone who posts personal attacks, but vows that they are attacking the opinions not the person?
Is it someone who posts on subjects which contradict the majority view?

I see many very unpleasant people here, who seem to be accepted regardless of their behaviour. I also see people, who appear to be pleasant and tolerant, yet their posts are laced with venom toward those who disagree with their views.....some of the old stagers fall into this category.....what we call a clique, a fortress mentality