Most mileage junkies are familiar with using mileage earning credit cards to get miles when buying stuff but you can combine the mileage earning power of your credit card by buying Visa/MasterCard and American Express gift cards through cash back websites and then using those gift cards to make your purchase. Cashback can range from 1% to 3% depending on the type of gift card purchased and the cash back website used to click through to make the purchase. Examples of cash back websites where you can do this include Big Crumbs (www.bigcrumbs.com), Fat Wallet (www.fatwallet.com) and My Deals and Coupons (www.mydealsandcoupons.com). Be aware that gift cards can't always be used at the same locations you can use a regular credit card, view the details at each gift card website before ordering. Also be aware that gift cards will not work with some Internet merchants unless you first register the card in your name.