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 107,778 websites Google Content Experiments Customers. We know of 7,506 live websites using Google Content Experiments and an additional 100,272 sites that used Google Content Experiments historically and 2,176 websites in the United States.
Get a list of 107,778 websites using Google Content Experiments which includes location information, hosting data, contact details, 7,506 currently live websites and an additional 11,533 domains that redirect to sites in this list. 100,272 sites that used this technology previouslyand 2,176 websites in the United States currently using Google Content Experiments.
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