Some years ago when web boards were just coming into their own, I use to participate in them a fair bit. One of these boards had a great feature to ignore individuals who were just being confrontational for the attention.

Logistically it is quite a burden to monitor this behavior. Let the participants on the forums weed out the individuals who thrive on being a jerk to others with the constant L2P spam and whatever other acronyms they toss on here repeatedly to entice confrontation. Let us simply put that person on ignore so nobody feels the need to engage and those individuals can continue to live in their own little worlds. Those with constructive thoughts will no longer feel queasy every time they want to spend a little time reading the community's thoughts.