I guess they just want proof or something im a big trader through online such as youtube also known as yugitubing where i show case my binder and trade with others im very trusted and have many refs so i don't mind if they want to see some proof that its me.
Yes I could see where that would be very frustrating, Ive listed a lot of Lots and have never once had someone ask me to do that, but I guess at the same time nobody should have a problem with doing it if they are able to. For you I would probably just list with your username each time you do a listing. It would probably be easier and save some of the frustration. Thanks for the answer because I was really curious. Thank you