I will attempt to try, friend, but I don't really understand what a troll is either. However, I guess I would define it as a person who maliciously posts on a forum in order to subvert its purpose and cause disturbance. Since BetterMost's purpose is to use the insight that we gained from the book and movie Brokeback Mountain to improve ourselves and our world, a troll would attempt to criticize, judge, or tear down those works of art and our virtual community.
A person who would initially post sympatico messages and then all of a sudden turn against fellow Brokies might also be called a troll. I don't really espouse using the word troll, because a person who goes to all the trouble to do these things obviously cares about the subject and should be shown compassion as much as possible. I've seen instances where trolls have become a site's most ardent supporters and believers.