There are millions of tests being run on the internet right now. If you recently visited 10 separate websites, chances are at least 3 of them were running a test. This means that you, as a visitor, were subjected to some sort of experiment. What was tested is unknown. But, just by visiting a website, your actions were recorded and tallied against other visitors.
Websites are testing for the purpose of optimization, whether to obtain more customers, encourage someone to click on a headline, or move someone to perform another action. When you visited one of the sites, you automatically were included in the experiment. Many of the tests resulted in some type of a business outcome, such as acquiring more customers, leads, or increasing sales. And, lucky for us, many of these tests were released.
