Advertising of commercial or residential real estate; matching consumers with professionals in the field of real estate, mortgage banking, and other services pertaining to the marketing, buying and selling or real estate; 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; Providing an interactive real estate website which promotes housing and apartment properties through offering prospective tenants video walkthroughs, property descriptions, text, price, location, maps and other information that would be influential to a prospective tenant in making a rental decision; Providing business planning and marketing solutions for real estate professionals; Providing marketing services for real estate agents, buyers and sellers regarding real estate; Providing marketing solutions for real estate agents, buyers and sellers regarding real estate; Providing real estate leads for prospective purchasers; Providing sales leads for the real estate agents, buyers and sellers regarding real estate industry; Real estate advertising services; Real estate marketing analysis; Real estate marketing services; Real estate marketing services in the field of property buying, selling and other services pertaining to real property; Real estate marketing services, namely, on-line services featuring the promotion of residential new construction, which also contains back office solutions for builders; Real estate marketing services, namely, on-line services featuring tours of residential and commercial real estate; Real estate sales management