Operating on-line marketplaces featuring housing, apartments, cooperatives, extended stay hotels, sublets, rentals, condominiums, townhouses, real estate, short term rentals, sharing of leases, apartment shares, one or two family dwellings, multiple dwellings, general rental and leasing exchange information for the foregoing; Operating on-line marketplaces for sellers and buyers of goods and/or services; Promoting the goods and services of others by providing a website featuring an online real estate marketplace in which tenants, renters, landlords, property managers and real estate agents and brokers are able to post and search for housing, apartments, cooperatives, extended stay hotels, sublets, rentals, condominiums, townhouses, real estate, short term rentals, sharing of leases, apartment shares, one or two family dwellings, multiple dwellings, general rental and leasing exchange information for the foregoing; Providing a website featuring an online marketplace for exchanging goods and services with other users; 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 sales and lease leads for others in the field of housing, apartments, cooperatives, extended stay hotels, sublets, rentals, condominiums, townhouses, real estate, short term rentals, sharing of leases, apartment shares, one or two family dwellings, multiple dwellings, general rental and leasing exchange information for the foregoing; Provision of an on-line marketplace for buyers and sellers of goods and services; Real estate marketing services in the field of housing, apartments, cooperatives, extended stay hotels, sublets, rentals, condominiums, townhouses, real estate, short term rentals, sharing of leases, apartment shares, one or two family dwellings, multiple dwellings, general rental and leasing exchange information for the foregoing