Sales promotions are short-term incentives used to encourage purchase or sale of a product. There are two main types: consumer promotions, which target end-users through discounts, samples, coupons, and contests; and trade promotions, which target resellers through incentives like buying allowances, free goods, and slotting allowances to gain distribution and support. Internet promotions are also increasingly used, such as contests to attract users to advertisers' websites, and provide prizes from money to merchandise. The objective is to stimulate short-term interest and sales of products and services.