I am fairly new to this forum and I need some help. I work as an assistant to a copywriter. My employer often experiments with content on his sites, offering one version to one set of prospects and another version to another set of prospects. He then decides which copy version is more effective. As a result his website has several versions of the same page with minor variations. Will he be penalized by search engines for duplicate content? Is there any limit for duplicate content on a site?
As his experimentals are vital for his studies is there a way out?