actually that nigerian spam thing is nigeria's fifth largest industry. We all recognize these as scams, but there is a portion of our population which are unable to determine these as scams. And while 99% of the people out there will throw these away that 1% will answer and get sucked in. What I do when I need to throw out an email on the web for a specific purpose is create a new email address. when I am done I throw it away and if I should need to stay in contact with someone, I'll send them my real email address. So once the car is sold, they get a bounce message.