Earn one additional Blue Sky point per dollar of purchases using an enrolled Blue Sky from American Express ® or Blue Sky Preferred from American Express ® at qualifying small businesses. (travelingformiles.com)
It's tempting to pay the smaller amount of your bill; your credit card company will be satisfied with the smaller payment, and you can fool yourself into thinking you got to charge hundreds or thousands of dollars of purchases almost for free. (creditdonkey.com)
SimplyCash: Earn an additional 1 % cash back per dollar of purchases in the form of a statement credit (travelcodex.com)