Monday, November 22, 2010

Search Engine Rankings 2008 - 2010 (Nov)

Google's Downward Trend Reversed at Yahoo's Expense
Whenever comScore, Inc. releases their search engine rankings, everyone who blogs about search engines or SEM comments on the new statistics. ComScore released their October 2010 results a few days ago and I've been reading lots of posts about the new data.

In March of 2010, I created a graph which shows the U.S. search engine ranking from comScore for the top five search engines from January 2008 to February 2010, because I had not see anyone assemble the data in one place before.

Here is an updated version of that graphic.

You may have noticed that in early 2010 Google began to trend down until September.

In September Google's share of searches bounced back. And now is closer to their recent historical levels.

One might think that Google's improvement was related to the MSN / Yahoo merger (announced July 28) or Google Live (launched Sept 8). But I think it has more to do with comScore Tweaking their methodology.

Back in June comScore said they where going to adjust their methodology because Yahoo and MSN were gaming the system.The release was scheduled with the release of July's data.

What do you think? Please leave a comment and let me know.

Download the excel file used to generate these chart.

This data based on comScore's Core search report data.

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