Online advertising and marketing services; advertising and commercial information services, via the internet; rental of advertising space; providing space at a web site for the advertisement of the goods and services of others; advertising by transmission of on-line publicity for third parties through electronic communications networks; providing a web site which features advertisements for the goods and services of others on a global computer network; providing a web site that enables users to post items for sale through on-line classified advertisements; providing an on-line searchable database featuring classified ad listings and employment opportunities; providing a searchable online advertising guide featuring the goods and services of other on-line vendors