Rewards cards have become the latest rage in the credit card industry. In the past, consumers shopped for credit cards that offered the lowest interest rate. Next came cards with low interest rates and no annual fees. Today, consumers can shop for cards based on what type of “reward” they can earn for using a specific issuer’s card.How does a reward program work? Typically, the program awards points, "dollars" or a cash value based on the amount you charge. The rate at which you collect poin.