Apple's iPad Mini Tops Amazon's Kindle Fire in Daily Ad Impressions
December 11, 2012 at 14:14 PM EST
Apple (NASDAQ: AAPL ) has yet to reveal exactly how many iPad Mini units have been sold since the device was released last month. If the ad impressions are any indication, however, Apple is the clear winner in its battle against Amazon (NASDAQ: AMZN ). Millennial Media, a mobile