Requires App Review.
The user_posts permission allows your app to access the posts that a user has made on their timeline. The allowed usage for this permission is to meaningfully improve the quality of a user's experience in your app. It must be clear to the user how their data is used to provide that experience. 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).