preparing and placing advertisement for others; preparing, placing and dissemination advertising for others via an on-line communications network; rental of advertising space on-line; product demonstration, namely demonstration of goods for promotional purposes; promoting the goods and services of others by providing on-line information about business and their products and services via an electronic marketplace; market research and analysis; business consultation; business marketing consultation; computerized database management; data processing services, namely compilation and processing of data in computer databases