Internet bidding sites are online platforms that allow users to buy and sell goods and services through an auction-style system. eBay is one of the most popular internet bidding sites, founded in 1995 by Pierre Omidyar. It allows users to list items for sale, and buyers can bid on them until the listing ends. The highest bidder wins the item and pays for it. eBay also offers a variety of other services, such as payment processing and shipping.