i did but not as bad as colin did..
i sold him an evo, and foolishly sent him it before him paying (said ill pay at the weekend etc)
weeks later i got in touch and said he'd give me the money or the car back, then i find the car on ebay (which sold for double for what he was meant to pay me, so he could have there and then!) and eventually agreed to giving me another car in return, which suprise suprise hasnt turned up.
just glad i didnt fork out big money like others have.