Advertising of commercial or residential real estate; Advertising services, namely, promoting properties for sale by owner via the Internet; Arranging for the provision of public utility services for rental properties of others; Matching consumers with real estate professionals in the field of real estate services via computer network; Matching potential buyers to facilitate co-ownership of residential real property; Membership club services providing discounts to members on real estate commissions and mortgage fees; Providing a database featuring real property tax information; Providing an interactive real estate website which promotes housing and apartment properties through offering prospective tenants video walk throughs, property descriptions, text, price, location, maps and other information that would be influential to a prospective tenant in making a rental decision; Real estate advertising services; Real estate sales management