Advertising of real estate; Matching consumers with professionals in the field of real estate; Matching consumers with real estate professionals in the field of real estate services via computer network; Negotiation and renegotiation for others of leases and subleases and real estate purchase agreements; Providing an online business directory featuring information in the fields of real estate, mortgages, real estate evaluation, and real estate investment; providing a website featuring a business directory featuring information about real estate properties, agents, brokers, and lenders; Operating an online marketplace for sellers of goods and services in the fields of real estate, leases, auctions, real estate evaluation, real estate investment, and real estate property; Providing statistical information, reports and indexes of real estate leases, auctions, mortgages, interests, and prices for others