Speaking of ebay scammers, if you get a ebay message in your email do not reply to it - go to "My Ebay" and reply to it there. Scammers are sending bogus messages and when you reply and log in they steal your user id and password.
Well I admit I am an avid ebayer, and all I can say is DEF. look at the feedback especially when it involves a decent amount of money. I also try and contact the person by phone before I bid if it involves a lot of money.