It doesn't really matter how much money they make or don't make off the book. I'm sure no one is questioning how much CGTalk makes off of Expose. The question is did people get commissions from the first book? Did ad agencies pick out people from that book? What was the success rate? How many copies were sold? I think it's really the blind trust that is at play here on whether the submission fee will be worth the risk. If Expose charged, I doubt there would be an uproar, because it is well known in the industry and you can't buy that kind of exposure. Renderosity is less known in those circles and thus it's more of a gamble.