Discover More Credit Card 5% Cash Back Categories

To receive 5% cash back on your Discover More Credit Card, you'll need to make sure you enroll in the bonus rewards on a quarterly basis. Five Cent Nickel blog has a good review of the 2011 categories for each quarter.

Unfortunately, groceries only qualify for the cashback bonus in March. That might be a good time to stock up on non-perishables, especially if you think inflation is going to become an issue this year.