Amazon's Tablet Strategy Appears to Pay Off as Kindle, Fire Sales Jump

As shoppers turned increasingly to Amazon (AMZN) for their Black Friday shopping needs, the company's hardware strategy appears to be paying off with Kindle e-reader and Fire tablet sales up significantly year over year.

Amazon announced that sales of its Fire tablets were up three times year over year on Black Friday, and Kindle e-readers did even better, growing four times from last year.

"This holiday there are going to be a lot of customers opening up new Amazon devices," said Dave Limp, senior vice president of Amazon Devices, in a press release.