Administering discount group purchasing programs, namely, negotiating contracts with providers of travel services, eyeglasses, rental car services and hotel rooms to enable participant members of labor unions, credit unions and travel clubs to obtain discounts on the purchase of their goods or services; Analyzing and compiling business data; Arranging and conducting of fairs and exhibitions for business and advertising purposes; Business management and organization consultancy; Conducting virtual trade show exhibitions online in the field of automobiles, art and crafts; On-line advertising on a computer network; Professional business consultancy; Provision of an on-line marketplace for buyers and sellers of goods and services; Rental of billboards; Sales promotion for others