http://dealnews.com/features/You-Like-Stores-on-Facebook-and-Twitter-But-Are-You-Loyal-/410862.html
You like them, but do you really like them? That's what stores are trying to figure out as they've rushed to Facebook and Twitter, only to find out that the huge numbers of people who sign up to get a coupon don't necessarily stay loyal. Find out what works better...
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