I didn't know about the system, but do see a flaw. First is that I believe most of us don't even (I didn't know until now) know about it. Second is that I think that I could enter feedback on someone without executing a transaction with them. I bought a slurry stone a few months ago from member "Zib". Pulled up the feedback section and see only one feedback...but I could and will leave feedback for him. I know he's offered/sold more than one item other than my slurry stone.