eBay block bidder list

On the eBay auction Web site, the block bidder list is a list of bidder or buyer usernames that an eBay seller can create. Those eBay members included on your block bidder list are not able to bid on any item you have for sale. Sellers often use block bidder lists to prevent buyers with whom thay have had a negative experience with from purchasing from them again. Also called a block buyer list.