In December of 2011, as if seeking a fitting conclusion to a year filled with controversy over sales tax, acquisitions, MAPs, and the economics of electronic books, Amazon ran a ham-fisted promotion of its price-comparison application for smartphones. The app allowed users to take pictures or scan the bar codes of products in local stores and compare those prices with Amazon’s. On December 10, Amazon offered a discount of up to fifteen dollars to anyone who used the application to buy online instead of in a store. Although certain categories, like books, were exempt, the move stirred up an
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