The wisdom of crowds is, every so often, not so much with the wisdom. In fact, the mob community mentality can do a lot of damage, whether by exerting its collective brute force, or by standing by and collectively doing nothing.
The wisdom of crowds is a funny thing. A few weeks ago, the search community got together to make Stephen Colbert the Greatest Living American and now the Digg community has turned on its own to the point where the co-founder has essentially thrown up his hands.
Community. Such a seemingly pleasant word. Until it becomes a mob.