Facebook is starting to share more about what it demotes in News Feed

The way that Facebook controls its News Feed is often controversial and largely opaque to the outside world. Now the company is attempting to shine more light on the content it surpresses but doesn't remove entirely. Facebook published its “Content Distribution Guidelines” detailing the roughly three-dozen types of posts it demotes for various reasons in the News Feed, like clickbait and posts by repeat policy offenders. That process, which relies heavily on machine learning technology to automatically detect problematic content, effectively throttles the reach of offending posts and comments without the author knowing. There’s still plenty that the guidelines, which Facebook has mostly confirmed in various reports over the years but is just now publishing for the first time in one place, don’t say. They don’t detail exactly how a demotion works and exactly how much it reduces a piece of content’s reach. Or how severely a certain kind of post, like a link to spam, is throttled in the News Feed relative to a post about health misinformation, for example.