Why You Can't Trust comScore's Search Market Share Numbers

Nearly every media source in the United States uses Comscore’s data to report on Google, Bing, Yahoo!, AOL and other engines. Even the US government, when analyzing Google’s potential monopoly status used these figures. Yet, this data is completely misleading.

I agree with +Rand Fishkin that the methodology is wrong. In fact, to my knowledge the comScore numbers also include searches within email!

It's always been obvious looking at the share of search engine traffic for clients that the market share is far more and new services mentioned are good. But ... I still find comScore useful because they have the longest set of data with the most consistent methodology. 

#search   #google   #seo  
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