Initially I stopped visiting techcrunch because of the ignnorance and hatred in the comments for a post Arrington made about a T-shirt company that sold intentionally offensive and incendiary products. I revisited a few months later (after I read they reshuffled and hired more reporters). Things were a little better for a while but Arrington seems to have returned to his aggressive and argumentative self. I didn't see discussion of it here but yesterday he went off on the Times and attacked their journalistic integrity for reporting techcrunch's dubious recent history (see last.fm).
Laporte is right, though, Arrington is a troll. He picks fights with anyone he can. "What are you gonna do about it" seems to be his attitude about everything, and when people disagree, he censors their comments from his Bully pulpit. This is no different from what people like O'Reilly and other right wing radio hosts do when they cut the microphone of people they do not agree with.