Advertising of commercial or residential real estate; Business services, namely, assisting the owners of intellectual property and intangible assets in finding investors; Business services, namely, matching potential private investors with entrepreneurs needing funding; Buyers' club services; Buying club services; 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 and processing rebates for the services of others; Membership club services providing discounts to members on real estate commissions and mortgage fees; Membership club services, namely, providing on-line information to members in the fields of branding, business development, business marketing, and marketing; Negotiation and renegotiation 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 information pertaining to investors who qualify to purchase certain types of securities; Providing real estate leads for prospective purchasers; Providing real estate video tours for marketing purposes; Real estate advertising services; Real estate auctions; Real estate marketing analysis; Real estate marketing services; 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; Wholesale buying club services