Advertising, marketing and promotion services; Business merchandising display services; Electronic commerce services, namely, providing information about products via telecommunication networks for advertising and sales purposes; Marketing the goods and services of others; Mediation of contracts for purchase and sale of products; On-line auctioneering services via the Internet; On-line retail department store services; On-line trading services in which users post requests for products and negotiate transactions via the Internet; Online advertising and promotional services; Operating on-line marketplaces for sellers and buyers of goods and/or services; Providing business and commercial information in the field of business travel management and the business travel industry; Providing travel management services; Providing a searchable on-line advertising website and guide featuring the goods and services of other vendors via the Internet; Providing a website for connecting sellers with buyers