Wow, do you really need someone to tell you that it's a scam?
Why don't people just sell on ebay? Fees aren't that bad and less chance of being scammed. I've sold there numerous times and every single one went smoothly. Just don't reveal your email in your listing.
http://www.zug.com/pranks/powerbook/index.html
They even got the scammer to have to shell out some money to pay for some shit.
there is a website where "good guys" lead these scammers on and have them jump through every hoop imaginable, letting them believe they are in for a big payday. Does anyone know the one I'm talking about?