I tried searching for it on bing :). The only thing that even had an estimate was http://searchengineland.com/microsoft-search-ad-revenue-estimates-get-major-d

I tried searching for it on bing :). The only thing that even had an estimate was http://searchengineland.com/microsoft-search-ad-revenue-estimates-get-major-downgrade-google-retains-74-u-s-market-share-report-161933 http://searchengineland.com/microsoft-search-ad-revenue-esti... Their guess was between 900 million and 1.8 billion, or large but they haven't a clue. 47% should be in the ballpark of a few hundred million.