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 103,181 websites that are Google Content Experiments Customers. We know of 2,862 live websites using Google Content Experiments and an additional 100,319 sites that used Google Content Experiments historically and 1,099 websites in the United States.
Get a list of 103,181 websites using Google Content Experiments which includes location information, hosting data, contact details, 2,862 currently live websites and an additional 7,695 domains that redirect to sites in this list. 100,319 sites that used this technology previouslyand 1,099 websites in the United States currently using Google Content Experiments.
Countries
Financial
Group
Region