Bing Market Share Actually Shrinks

Microsoft CEO Steve Ballmer leans to his right

After a couple months of underwhelming growth, Microsoft’s search engine Bing actually lost U.S. search market share in September, according to data from Experian Hitwise.

  • Bing dropped to processing 8.96% of all U.S. searches in September from 9.48% in August.
  • Yahoo (YHOO) slumped too, sinking to 16.38% from 16.96%.
  • Google (GOOG) advanced to 71.08%.

Standard disclaimer: This is one set of data from one source. Moreover, comScore tends to be the search stats source the industry prefers — not Hitwise.

But even still, this is a lousy — and, yes, slightly embarrassing — outcome for Microsoft (MSFT), which committed $80 million to marketing Bing when it launched just a couple months ago. (In June, Microsoft CEO Steve Ballmer said he would spend as much as $11 billion on search. We said he shouldn’t.)

Here’s Hitwise’s chart:

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