Cash backs are offered by credit card companies in form of points which you can accumulate by frequently using your credit card, they can discount travel miles, discounts on your next order in a specific restaurants and others. At credit cards quick you will be able to see a complete lists of cash backs which you can use later on if you accumulated all the points you need in order to avail them. See card securityand credit rebuild for your reference on how you can use your cash backs wisely.