Dissemination of advertising for others via the Internet; Dissemination of advertising material; Distribution and dissemination of advertising materials; Promoting the goods and services of others by preparing and placing advertisements in an electronic magazine accessed through a global computer network; Promoting the goods and services of others via a global computer network; Providing and rental of advertising space on the internet; Real estate advertising services; Real estate marketing services, namely, on-line services featuring tours of residential and commercial real estate