Promoting the goods and services of others via either by providing hypertext links to the web sites of others or through a global computer information net; on-line trading services in which seller posts products to be auctioned and bidding is done via the Internet; promoting the goods and services of others via a global computer information network; business services, namely, registering, screening, credentialing, and organizing third-party vendors, suppliers, and contractors, and documentation and information on behalf of others; providing a searchable online advertising guide featuring the goods and services of other on-line vendors on the Internet