Apple's iPad and iPad mini may have been a top-selling item over the holiday period, but entries from competitors sold strongly enough to slightly loosen Cupertino's stranglehold on the tablet sector. This according to new figures out from Chitika Insights, which looked at hundreds of millions of smartphone and tablet ad impressions from December 1 to December 27, 2012 in Canada and the United States. Chitika found that tablets from Amazon, Samsung, Google, and Microsoft gained a total of 5.5 percent market share over that period, while Apple's iPad lost 7.14 percent share.
