Hitwise put together some data which shows the increase of Google traffic to Wikipedia over the past year and reveals that Google downstream traffic to Wikipedia is up 166% year over year.

Here are some stats:

• Hitwise data showed that for the week ending Feb 10, 2007, 70% of Wikipedia’s upstream visits came from search engines, with 50% from Google alone.
• Google’s share of Wikipedia’s upstream traffic from Google has increased by 19% over the past year (week ending 2/10/07 vs. week ending 2/11/06)
• At the same time that Wikipedia’s market share of US visits increased by 143%.

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Google, Wikipedia, Search Engine, Hitwise, Google Traffic