I'm A Banana
Potassium-Rich
I think the only real mistake WotC has made in this aspect of the playtesting is allowing Ari and some of the others to make any comments at all. That's clearly opened the door to madness and now that they've seen the results we can be sure that it won't happen again. They were letting people talk about their enjoyment of the game to give the public a little treat. That bit them on the ass (rightfully so, I think) and if they're half as smart as I think they are, they'll learn from the mistake.
I'm defending WotC's choice, here, but even I think this was kind of an ill-thought-out tactic. They didn't do anything wrong, but they should've know their audience enough to know that any hint of WotC "gagging" people would imply that they had something to hide.
It isn't bad, but it looks kind of bad. I get that they were trying to get buzz going, but they come off looking kind of manipulative (even though, as said above, they took pretty much the right course of action).
I don't blame them. I might've made the same descision in their shoes. But the praise does come accross as kind of cheap because it can't come with the criticism that a discerning audience demands, even if the posters really and honestly had no criticism to offer.