Associated Press
This undated image provided by Barnes & Noble shows one of the two new Nook tablets the company will be releasing in the fall of 2012. Tablets are at the top of many wish lists this holiday season. The choice used to be pretty limited, with the iPad dominating over the latecomers. But this year, the field is more even, as tablets from Apple's competitors have matured. In addition, Google and Microsoft have dived in with their own tablets, providing more choice. (AP Photo/Barnes & Noble)

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