My Discover Card is with me always and the first one I select for purchases.  I receive either 1% cash back or 5% cash back on every purchase I make.  The 5 per cent cash back opportunities change quarterly.  You can double your rewards by selecting a shopping opportunity with many businesses.  You can apply your Reward credit to your Discover Card account. 

I use my Discover Card even for small purchases to earn the 1% cash back.  Every dollar spent ears a penny credit or a nickle credit if the 5 per cent cash back offer for that quarter applies.  At least once a year the 5 per cent cash...