Search Ad Spending Share By Device & Search Engine, Q4 2011 – Q4 2012 [TABLE]
In the competition for ad dollars, Google continues to have a sizeable advantage over Bing on all platforms: On desktops, Google captured more than four-fifths of search spending in the last quarter measured, according to The Search Agency, and Bing under one-fifth (figures for Bing refer to the combined search marketplace of the Yahoo!-Bing search alliance). Google’s advantage is even greater in the growing mobile space. On both smart phones and tablets, Google had 88.8% market share, and Bing had 11.2%. Read the rest at eMarketer.