title: Can I use the facebook credentials to for users to access my site?
body: <p>I'm starting to work on a site that will be strongly connected to a corresponding <a href="http://facebook.com" rel="nofollow noreferrer">Facebook</a> app. I want the contents to be free for all to view, but only registered users will be able to edit it (quite similar to <a href="http://serverfault.com">serverfault</a>, actually).</p>
  
  <p>Since I think that most of my users will be logged in to facebook, I would really like to use their facebook credentials as to login to my site - the same way Open-Id registration works here.</p>
  
  <p>Can this be done?</p>
  
  <p>Thanks,</p>
  
  <p>Udi Pasmon</p>