Post up the scammer's e-mail address. In the automotive world, scams are just part of the game. So, in order to deal with it we call out the person directly. Usually there are stickies in the 'for sale' forum to denote anyone being dishonest. Trust me it works, and I have read some cases that reached court! Anway, the first step in preventing others from being scammed is to put the scammer in the spot light. Who knows, maybe someone else got scammed by that very person, and maybe able to get justice. You can even report it to:
http://www.ifccfbi.gov/index.asp <--they collaborate with the FBI. MANY nigerian scammers get caught here
Be careful people....and always try to use paypal if purchasing, you can always fight it!