Recent events on the message board suggest that the time has come to stop entertaining the trolls. It's not worth our time even in the unlikely event that a troll does come along who can contribute to the discussion. I suggest that we should immediately but politely stop responding when the content of a post clearly identifies itself as written by a troll. The board can afford to lose the ramblings of a troll, but can't afford to lose the contributions of another Professor Campbell.