Ad serving, namely, placing advertisements on websites for others using specialized computer software; Administration of a discount program for enabling participants to obtain discounts on goods and services through use of a discount membership card; Administration of a program for enabling participants to obtain discounts on goods and receive improved services; Advertisement for others on the Internet; Advertising and commercial information services, via the internet; Advertising and marketing; Arranging and conducting special events for commercial, promotional or advertising purposes; Business consultation; On-line retail store services featuring a wide variety of consumer goods of others; On-line trading services in which users post requests for products and negotiate transactions via the Internet