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 102,082 websites that are Google Content Experiments Customers. We know of 2,922 live websites using Google Content Experiments and an additional 99,160 sites that used Google Content Experiments historically and 1,121 websites in the United States.
Get a list of 102,082 websites using Google Content Experiments which includes location information, hosting data, contact details, 2,922 currently live websites and an additional 8,176 domains that redirect to sites in this list. 99,160 sites that used this technology previouslyand 1,121 websites in the United States currently using Google Content Experiments.
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