title: What data is available to a Facebook app after permissions are granted?
body: <p>Imagine I have a mobile app, and then I create a new Facebook app, which I use to login users through it. In order to log into the app, users have to grant <strong>user_likes</strong> permission.
  Then, I can access their user_likes with a request to the facebook graph using the <strong>app_token</strong>. I've tested this. But also, I realized that only the user_likes set to "public" are shown. All the user_likes that are private or only friends, are not shown.</p>
  
  <p>Is this the intented behaviour? I mean, if some user granted me access to user_likes and he didn't revoke explicitly the permission after that, should I be able to get the user_likes anyway or no?</p>
  
  <p>Thanks in advance.</p>