35 Advertising of commercial or residential real estate; Negotiation and re negotiation for others of leases and subleases and real estate purchase agreements; 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 real estate video tours for marketing purposes; Real estate advertising services; Real estate marketing analysis; Real estate marketing services in the field of sales; Real estate marketing services, namely, on-line services featuring tours of residential and commercial real estate; Real estate sales management