Recently Microsoft released a new search engine called Bing, which has begun sending traffic to websites with Google Analytics installed. Bing currently shows up as a referring site in the Traffic Sources reports. We are actively working on an update that will include Bing under the default list of search engines in Google Analytics.
If you absolutely can't wait for the upgrade, you can add the following line to your Google Analytics tracking code as a temporary solution. Note, this workaround is recommended for advanced users only. For more information on adding custom configurations to the Google Analytics tracking code, read this article.
pageTracker._addOrganic("bing", "q");
If you absolutely can't wait for the upgrade, you can add the following line to your Google Analytics tracking code as a temporary solution. Note, this workaround is recommended for advanced users only. For more information on adding custom configurations to the Google Analytics tracking code, read this article.
pageTracker._addOrganic("bing", "q");
Official Source