We know, from Mueller, that Google doesn’t differentiate among content you wrote and content your buyers wrote. And we currently knew that content is often a ranking variable. “…When you've got a large amount of person-produced content, make certain it meets your criteria for publishing content on your web site.” https://ugccontentrankingongoogle72693.blogs100.com/38037763/detailed-notes-on-ugc-content-ranking-on-google