Real estate advertising services; Real estate marketing analysis; Real estate marketing services; Real estate marketing services in the field of homes, apartment, townhomes, and condominiums; 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; Real estate transaction auditing services; Advertising of commercial or residential real estate; Negotiation and renegotiation for others of leases and subleases and real estate purchase agreements; Providing real estate leads for prospective purchasers; Providing real estate video tours for marketing purposes; 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; Providing information in the fields of real estate concerning purchasing and saving of property via a website; Providing marketing services for real estate; Providing marketing solutions for real estate; Providing sales leads for the real estate industry