| http://www.w3.org/ns/prov#value | - Many attribute the sales surge to the company's offer of free shipping in the U.S.Bigging it upHowever, in the absence of hard numbers, cynics might suggest Amazon is talking the Kindle up in a bid to raise its profile as competitors like Barnes & Noble's Nook hove into view.Nonetheless, that may not even be necessary, as it turns out B&N is in a spot of bother with its supply chain and has been o
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