rental of advertising time on communication media; Promoting and showcasing the goods of others in the field of science and technology by means of an on-line shopping site with links to the retail advertisements of others; business management assistance; commercial administration of the licensing of the goods and services of others; sales promotion for others; Purchasing and procurement services, namely, procuring of contracts for others for the purchase of goods and labor contracting services; marketing services; provision of an on-line marketplace for buyers and sellers of goods and services; compilation of information into computer databases; sponsorship search