My buddy just made a website that some of you might be interested. If you are someone that works in residential or commercial trades (plumbing, electrical, framing, sheetrocking, etc.) or anything that offers a service (landscaping, locksmith, or whatever), www.chitlist.com could help you.
It’s a place to report bad customers and review possible future ones. Its basically a BBB (Better Business Bureau) for contractors. Instead of customers reporting contractors, it’s the other way around.