Lately, I seem to be only disagreeing, but that's largely because I don't have anything to add to the posts I agree with.
One of the other features they have, and really the coolest thing over there, IMO, is the 13-line critique. You post the first 13 lines of original short fiction, and various regulars go at it with a red pen. The comments are incisive and gently delivered--they're a real learning experience.
So, I've been tempted to try out page one of "Eating Venom," but they ask you to have contributed to other posters' efforts, and let me tell you, I don't have the chops to play on that stage.
It's still a great education in word choice and revision. Highly recommended.