title: posting on facebook user wall from my website
body: <p>I have a website which use facebook connect.
  I want that a user can post on his wall when clicking a button.</p>
  
  <p>I add the permission : publish_stream and I was expected that when authenticating to facebook, the facebook dialog will ask for permission to posting on the wall (because I asked for publish_stream) but it does not. so I am getting the dialog only when trying to post on its wall instead of when user is first signed up using facebook connect.</p>
  
  <p>Am I doing somthing wrong ?</p>