Search Market Share Changes Across Measurement Firms

Search Engine Land, Wednesday, April 23, 2008 12:15 PM
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Danny Sullivan is a firm believer that one month's search market share report from one vendor does not guarantee an accurate view of the "state of the search market." Examining the engine's performance across measurement firms over time provides a more holistic view, he says, and does so in this post.

The charts provided offer a view of the Big Three from June 2007 through March 2008 for both market share and search volume, using stats from comScore, Nielsen, Hitwise and even Compete. And while some trends (i.e. Google retaining its search market dominance) were obvious, what became clearer was that the measurement firms' methodologies and stats were often quite different.

For example, Google came out on top for market share and number of searches. But while comScore and Compete peg the average volume of searches on Google in the 5 and 6.5 billion range, Nielsen reports a much lower average of about 4.5 billion queries.

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