Why do Businesses Provide Coupon Discounts?

Are you looking for a way to get some major discounts on what you have to buy? Are you looking long and hard to find somebody that will sell you that new perfume from Chanel at a lower price? The answer to this lay in coupon sites.
Is this a scam? Why would businesses do this at all? Why slash their prices and incur what seems to the consumer as a loss? Most of the time, they provide these discount codes to make sure that you buy their products and prefer it over others'. By attracting customers to their site, not only do they rake in a sizable sum by selling products, but they also rake in some reasonable earnings through advertisement. In the end, it is a win-win situation, packaged and ready to snowball through some good times.