Providing online shopping services; providing online auction services; providing infomediary services, the infomediary services including assisting consumers in online searching and selection of merchants, goods and/or services; providing merchants with search engine listing services, including the auctioning of search positions; providing comparison shopping services; providing ratings of businesses for consumers and businesses; providing online ratings of businesses for consumers and businesses; providing buyers with information about sellers, goods and/or services; providing search engines, databases and user interfaces enabling searches for information about sellers, goods and/or services; assisting buyers by providing access to online sellers; sponsoring and facilitating promotional programs for buyers and sellers; sponsoring rebate programs for buyers; and sponsoring credit card programs