Real estate agency services; Real estate brokerage; Real estate consultation; Real estate listing; Real estate listing services for housing rentals and apartment rentals; Real estate multiple listing services; Real estate rental services, namely, rental of residential housing; Real estate service, namely, rental property management; Classified real estate listings of apartment rentals and housing rentals; Lease of real estate; Leasing of real estate; Providing real estate listings and real estate information via the Internet; Providing an Internet website portal offering information in the fields of real estate concerning the purchase and sale of new and resale homes and condos; Providing information in the field of real estate; Providing information in the field of real estate by means of linking the web site to other web sites featuring real estate information