Advertising and marketing; Advertising, marketing and promotion services; Business advice and analysis of markets; Cooperative advertising and marketing; Cooperative advertising and marketing services by way of solicitation, customer service and providing marketing information via websites on a global computer network; Development of marketing strategies and concepts; Direct marketing advertising for others; Market analysis; Market reports and studies; Market research; Market research studies; Market study and analysis of market studies; Promoting, advertising and marketing of the on-line websites of others; Real estate marketing services, namely, on-line services featuring tours of residential and commercial real estate; Statistical evaluations of marketing data