Business management of hotels; Commercial information agency services; Dissemination of advertising matter; Marketing services; On-line advertising on a computer network; Organization of exhibitions for commercial or advertising purposes; Price comparison services; Public relations; Sales promotion for others; Systematization of data in computer databases; Telemarketing services; Rental of advertising time on communication media; The bringing together, for the benefit of others, of a variety of goods and services, enabling customers to conveniently view and purchase those goods and services from an Internet web site particularly specializing in the marketing of the sale of goods and services of others