title: Facebook Graph Api subscription to posts/notes
body: <p>I need to get updates on posts by users of my facebook app. I am interested in comments and likes on those posts and a way to get notified so that my app database can be populated.</p>
  
  <p>I have seen <a href="https://developers.facebook.com/docs/api/realtime/" rel="nofollow">subscription</a> api but it is currently limmited to user/permission/pages. I am interested in connections. What work arounds do you guys suggest to get those updates and reaching those interactions. I understand that a cron job calling all posts individually using graph api is not practical.</p>