Advertising services; Advertising of commercial or residential real estate; Advisory services relating to business management and business operations; Business administrative services for the relocation of businesses; Business management consulting; Commercial administration of the licensing of the goods and services of others; Matching consumers with real estate professionals in the field of real estate services via computer network; On-line advertising on computer networks; Outsourcing services in the nature of arranging procurement of goods for others; Procurement, namely, purchasing real estate for others; Providing business information via a website; Providing commercial information and advice for consumers in the choice of products and services; Providing marketing services for real estate professionals; Providing real estate leads for prospective purchasers; Providing an on-line showroom for the goods of others in the field of single-family homes, multi-family homes, condominiums, co-ops, rentals, apartments and offices; Provision of an on-line marketplace for buyers and sellers of goods and services; Real estate auctions; Real estate marketing analysis; Real estate marketing services; Real estate marketing services in the field of single-family homes, multi-family homes, condominiums, co-ops, rentals, apartments and offices; Real estate marketing services, namely, on-line services featuring tours of residential and commercial real estate; Real estate sales management; Sales promotion for others