Arranging and conducting exhibitions, trade shows and business conferences in the fields of computers, computer systems, computer networks, computer hardware and peripherals, computer software, software development, telecommunications, the Internet, interactive television, and computer and video games software and equipment; licensing of computer software and technology; providing an on-line computer database featuring information in the fields of business communication and commerce via the Internet; on-line business consultation and management services via the Internet; mail order services and computerized on-line retail services in the fields of computer hardware and software, publications on computer hardware and software, reference works, educational products and language products; on-line ordering services, namely, providing information and links to on-line retail stores featuring books and publications, games and toys; advertising and marketing services, namely, promoting the goods and services of others via computer networks, wireless networks and the Internet; dissemination of advertising for others via electronic mail and over computer networks, wireless networks and the Internet; providing management assistance, namely, assisting others in direct electronic mail advertising, and assisting others in placing and running advertisements on computer networks and the Internet; promoting the goods and services of others by providing hypertext links to the web sites of others; providing consumer information on various products via the Internet; providing links to on-line auction sites and on-line retail sites of others in various fields; providing business directory information over a global computer network; on-line yellow pages services; on-line career placement services; providing on-line information in the field of business; business management and advertising services for others, managing lists and providing services to assist in direct electronic mail advertising; assisting others in placing and running advertisements on computer networks and global communication networks; and billing services