Helicrazi
Rotorheads is a forum that is the epitome of politeness and rational debate when compared to some other forums.
There is one forum on PPrune where posting "Great sunrise today, going to be a great day for flying!" will start a fight that will go on for 20-30 pages. Friendships will be torn assunder, reputations trashed, and folks will be challenged to duel to the death.