Do you realize how much the response to GHash reaching 51% spooked GHash themselves? They invited myself, Jeff Garzik, and a bunch of other representatives from the mining, investment, banking, VC, and payments sides of the Bitcoin ecosystem to an emergency meeting to figure out what to do about it. A common thread among the investors/VC's there is that GHash reaching 51% seriously called into question the value of the Bitcoin ecosystem, and that GHash should be taking this seriously as they're shooting themselves in the foot. The outcome of that meeting was a vague plan to limit the size of the GHash pool, which I suspect they actually implemented by pointing their hashing power to other pools to cover up their total hashing power - although I have no way of knowing. Far from an ideal response, but a lot better than the outcome would have been if there had been no community outcry at all.