According to: http://searchengineland.com/the-new-bing-microsoft-tries-again-with-search-meets-social-120728 http://searchengineland.com/the-new-bing-microsoft

According to: http://searchengineland.com/the-new-bing-microsoft-tries-again-with-search-meets-social-120728 http://searchengineland.com/the-new-bing-microsoft-tries-aga... Bing has a deal with facebook and twitter to access the data. > However, Google still has an argument that it cannot get all the same data on the open web as Bing. Twitter actually closed itself off to Google last year, blocking Google from even getting open web data. Even if Google renews a deal with Twitter, it’s now gunshy about building features around something that might disappear. Meanwhile, Facebook doesn’t seem to allow public posts out to the open web. > Bing doesn’t have these issues, with a deal in place with Twitter and Facebook and no apparent blocking by Google.