Advertising of commercial or residential real estate; Arranging, planning, and conducting tag sales, estate liquidation sales, yard sales or garage sales for others; 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; Matching potential buyers to facilitate co-ownership of residential real property; 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