Infographic: 7 Types of Free Shipping

Free shipping is one of the biggest shopping trends to emerge in recent years. Nearly 50 percent of online sales for 2010 had a free shipping offer, up 10% from 2008. Things look even better for 2011, as more merchants buy into these popular promotions. Not all deals are the same, however. We take a look at the seven most popular forms of free shipping deals.
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