All of my auctions clearly state US only, no exceptions. The past 24 hours, I've been deluged with potential bidders from Asia asking if I'll ship there. I know there's a very high probability that they're all scammers, so I'd like to reinforce my eBay block by blocking their individual usernames. I can't, for the life of me, figure how to block bidders from an auction. Can someone please help me with this? Also, does the eBay block on "registered in countries to which I don't ship" really work?