Systems, methods and computer program products are provided that can allow users to obtain information about, and participate in, auctions being conducted at a plurality of on-line auction sites. A Web site of an intermediary maintains information about items being auctioned at a plurality of remotely located auction sites in communication with a computer network, such as the Internet. Auction information is displayable to users accessing the intermediary web site via clients, such as Web browsers, via the computer network. Potential buyers accessing an intermediary Web site can search for and place bids for items being auctioned at remote, on-line auctions. In addition, sellers can utilize an intermediary Web site to locate on-line auctions within which to list items for sale.