Computer services, namely, dissemination of advertising for others via the Internet; promoting the goods and services of others by providing hypertext links to the web sites of others; promoting the goods and services of others by preparing and placing advertisements in an electronic catalog accessed through a global computer network; providing a web site on the Internet whereby buyers of goods or services locate and receive quotations from multiple competitive sources and sellers of goods or services identify and bid on multiple new sales opportunities, providing a web site on the Internet which features advertisements for the goods and services of others, providing space at a web site for the advertisement of the goods and services of others; business services, namely, providing computer databases regarding the purchase and sale of a wide variety of products and services of others; providing on-line directory information services also featuring hyperlinks to other web sites; providing an on-line computer database featuring trade information in the field of construction, architecture, design, building, manufacturing, facilities management and furnishings