There are some people on the Internet who take the "hate machine" out for a spin and end up running over everything decent. They follow and/or troll lolcows not out of a desire for lulz, but out of genuine hatred and/or trollshielding. We call this "A-Logging", after Anthony "A-Log" LoGatto, a man with a disturbing hatred for Chris-chan. For instance, he compared Chris to Saddam Hussein. Unfavorably. The irony is that he really isn't all that different from Chris in reality, and many think he was partially trying to draw attention away from himself. It backfired, and he ended up becoming a lolcow instead.
So, do you have any other examples of this?