Requires App Review.
The user_likes permission allows your app to read a list of all Facebook Pages that a user has Liked. The allowed usage for this permission is to provide a personalized experience by correlating or surfacing content related to the person's Likes. This includes curating content at scale to customize apps with large amounts of content, and enabling people to share their Likes with others, for example in dating and music 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).