Content Experiments helps you optimize for goals you have already defined in your Google Analytics account, and can help you decide which page designs, layouts and content are most effective.
https://support.google.com/analytics/bin/answer.py?hl=en&topic=1745207&answer=1745147#utm_source=blog&utm_medium=gwoblog&utm_content=content&utm_campaign=content_experiments_launch
Analytics and Tracking · A/B Testing
Get access to data on 103,772 websites that are Google Content Experiments Customers. We know of 2,967 live websites using Google Content Experiments and an additional 100,805 sites that used Google Content Experiments historically and 1,138 websites in the United States.
Get a list of 103,772 websites using Google Content Experiments which includes location information, hosting data, contact details, 2,967 currently live websites and an additional 7,879 domains that redirect to sites in this list. 100,805 sites that used this technology previouslyand 1,138 websites in the United States currently using Google Content Experiments.
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