Barter exchange services, namely, providing commercial barter and trade exchange of products and services via a global computer information network; Business intermediary and advisory services in the field of selling products and rendering services; Exchange services, namely, bartering of goods for others; Providing a web site featuring consumer information on various publications and providing hyperlinks to on-line retailers that sell the publications; Providing information pertaining to procurement, buying, selling and tendering information and opportunities relating to goods, services, and construction via computer, computer networks, telephone, the internet or electronic mail