http://www.helium.com/knowledge/279836-how-a-grocery-store-uses-a-discount-card-for-more-than-just-discounts.xml Helium.com > Smart Spending > How grocery stores use a discount card for more than just discounts en-us Copyright Helium.com Thu, 01 Oct 2009 06:17:25 GMT Thu, 01 Oct 2009 06:17:25 GMT