On-line retail store services featuring a wide variety of consumer goods of others; On-line retail store services featuring the sale of a variety of merchandise; On-line advertising and marketing services; On-line trading services in which seller posts products to be auctioned and bidding is done via the Internet; Operating on-line marketplaces for sellers and buyers of goods and/or services; Promoting and marketing the goods and services of others by advertising and selling goods online; Promoting the goods and services of others by advertising and selling goods online; Provision of an on-line marketplace for buyers and sellers of goods and services