35 Operating on-line marketplaces for buyers, sellers and traders of goods and services; on-line trading services in which buyers, sellers and traders post products to be bought, sold and traded and trading is done via the internet; on-line retail store services, on-line procurement, providing an on-line searchable computer database for the procurement of, and on-line information regarding a wide variety of general products and services in the fields of entertainment, music, art, literature, culture, technology, travel, sports, fashion, antiques, collectibles, and hobbies; on-line retail store services; on-line computer services, namely, providing information regarding the goods and services of others in the nature of a buyer's guide by means of a global computer network; dissemination of advertising for others via the internet; promoting the goods and services of others by means of operating an on-line shopping mall with links to the retail web sites of others