The moderators are the ones who decide what is a troll is, and the moderators on this site do an excellent job IMO.
I have no real problem with harmony and jacksonianmarch, although I do take issue with them on certain posts. But that's a different story. I take issue with what a lot of Sox posters say too.
Babe was a perfect example of what a troll is. He would take it to that next level of just being totally insulting and obnoxious. And that's why 'he gone'.