Study: iPad mini way outpacing last year's Kindle Fire boom

Last year, Amazon surprised many pundits and the public by claiming strong Kindle Fire tablet sales of more than a million per week during the holiday season, doubling overall 2011 sales. A new study that compares ad impressions in mobile apps compared that sales period to the current ad impression rate of the iPad mini and found that it garnering 50 percent higher activity than the peak of Kindle Fire sales. Calling the iPad mini a "game changer," Millennial Media safely predicts the iPad mini will emerge…