- Kill a BIN without revealing your primary ID.
- Test the reserve amount without revealing your primary ID.
- Test another bidder’s proxy bid amount without revealing your primary ID.
- Bid on an auction to prevent the seller from ending the auction without revealing your primary ID.
- Post on ebay forum so you can flame someone without revealing your primary ID.
- Win several auctions from a seller that you dislike and not pay them without revealing your primary ID.
Possible uses for a 2nd ID?