https://www.cnet.com/news/facebooks-new-why-am-i-seeing-this-post-wants-to-make-sense-of-your-feed/ > Though it was announced a day prior to April 1, the new feature is not a April Fool's Joke, a Facebook spokesperson said to CNET. It'll begin rolling out this week and be available to all Facebook users by mid May, the spokesperson said.  > The function will show you what data was used to prioritised the post on your feed. How often you like a person's posts and how often you engage with different mediums like video, photo or text were two given examples of information used to shape a post's prominence.