Microsoft Search Ad Revenue Estimates Get Major Downgrade; Google Retains 74% U.S. Market Share [Report]

eMarketer has issued a major revision to its predictions for Microsoft’s U.S. search ad revenue. The latest estimates peg Microsoft net search ad revenue at $660 million last year and $890 million this year, down substantially from the previous estimates of $1.41 billion last year and $1.84…

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