You might find you're paying for something known as "credit balance insurance." Depending on your credit card, it could be called "BalanceProtector" or "Account Protector," but the idea is the same: for a fee, credit balance insurance promises to cover your monthly minimum credit card payments in case of loss of income to due job loss or extreme illness. But is it worth the cost? Wendy Mesley investigates. Also: Does this $200 gas-saving gadget work?