I have been listing my Balenciaga bags and I say in the listing that I am a member of tPF. When someone in the ebay "ask seller a question" feature asks for my user ID, is there any reason NOT to give that out? It makes me little uncomfortable, esp. when the asker has 4 Feedbacks or something. Wondering if they could be scammers and just trying to get info? What could they actually do with someone's PF ID??? Am I being paranoid here? What is the general protocol? If it's another tPFer, of course I have no qualms about giving out my ID!