My friend at work just had this happen to him.....
He goes to log on to E bay and he cant get in....he gets on the online help thing they have.....and they find out his password ....and all his preferences have been changed......He just recently sold a harley on there for 12k....The bike was relisted ..in his name for 6k.....and required a $500 deposit.....Ebay said it was traced to China....I guess it pays to check your account often and change your password once in a while...