Requires App Review.
The user_posts permission allows your app to access the posts a person has made on their timeline, but not the comments on those posts. The allowed usage for this permission is to enable people to create physical or digital books or albums of their timelines, to share memories from their timeline on Facebook (or on other social apps) or to share their posts with other social apps. You may also use this permission to request analytics insights to improve your app and for marketing or advertising purposes, through the use of aggregated and de-identified or anonymized information (provided such data cannot be re-identified).