Well, it's a nice idea but I think this is high risk. In the very distant past when I was young and naive there were occasions on which I didn't get paid for c

Well, it's a nice idea but I think this is high risk. In the very distant past when I was young and naive there were occasions on which I didn't get paid for commercial work, so I can sympathize with that. However, naming and shaming rogue customers could just be a recipe for libel lawsuits.