Operating on-line marketplaces for facilitating discounts in the form of electronic coupons through bidding on online auctions; Promoting the sale of goods and services of others by providing discounts in the form of promotions and electronic coupons via a website; Provision of an on-line marketplace for buyers and sellers of goods and services; Provision of an on-line marketplace for buyers and sellers of discounts in the form of electronic coupons through bidding on online auctions; Provisi...