Duh...I didn't even think of that. I've done that buying and reselling from ebay and other sites. And I've used the same id for all sites. (I want my buyers to be able to find me). I need to get another I.D.!! You know, sometimes things can be right in front of you, and you never see them.
I tease my parents, saying I've caught their forgetfulness from them, or as a child once referred to it, "the oldtimers."