Feedback for deals that fail?

I agree. It's not even the question of whether we want to deal with a specific member. The question here is about being informed so each person can make their own decision. If it can't be done via feedback, and it can't be done by posting threads, then what is there to base a decision on?
Just to respond Matt, There has to be a sale for there to be feedback. How can you complain and comment on something that didn't happen. There have been numerous threads about bad dealings and until they get out of hand they remain up. Nobody is preventing you from voicing your opinion about your sale or purchase that went bad, but talk to your fellow members that are getting out the rope.