Advertising, including promotion relating to the sale of articles and services for third parties by the transmission of advertising material and the dissemination of advertising messages on computer networks; Arranging and conduction of auction sales; Business management assistance and particularly carrying out tasks necessary for the smooth conduct of sales by auction; Business management consulting with relation to strategy, marketing, production, personnel and retail sale matters; Business services, namely, providing computer databases regarding the purchase and sale of a wide variety of products and services of others; Creation of marketing tools designed to increase a client company's knowledge of customer needs, and its competitors' products and services, pricing, advertising strategy and sales strategy; Distribution of publicity materials, namely, flyers, prospectuses, brochures, samples, particularly for catalogue long distance sales; Electronic commerce services, namely, providing information about products via telecommunication networks for advertising and sales purposes; Marketing services, namely, providing informational web pages designed to generate sales traffic via hyperlinks to other web sites; Modeling for advertising or sales promotion; Modeling services for advertising or sales promotion; Providing a web site at which users can offer goods for sale and buy goods offered by others; Providing a web site that enables users to post items for sale through on-line classified advertisements; Providing a web site 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 an on-line searchable database featuring used book being offered for sale and buyer/seller contact information; Publicity and sales promotion relating to goods and services, offered and ordered by telecommunication or the electronic way; Publicity and sales promotion services; Sales demonstration; Sales promotion services; Sales volume tracking for others