title: Drupal for facebook: auto log in to facebook account if Drupal account is linked
body: <p>I am hoping to achieve a similar functionality to this site: www.lovecreativity.co.uk, whereby if you:</p>
  
  <p>1) have facebook logged in, and... <br>
  2) have previously authorised the site...  <br>
  3) it  will automatically log you in. </p>
  
  <p>This site is using the wp-facebookconnect plugin, which I have tried reverse engineering but it's a bit too intense. </p>
  
  <p>I'm using the Drupal for Facebook module, which does <a href="http://www.drupalforfacebook.org/node/2196" rel="nofollow">not offer this functionality</a> ("Logging into Drupal will never log you into facebook"). </p>
  
  <p>Currently, it will disconnect the user's facebook account between sessions, but I need it so that if you log in to the site using the site account, and have previously given access to the site, then it will automatically connect you again.</p>
  
  <p>I've also tried finding documentation to answer my question but had no luck at all, can anyone point me in the right direction?</p>
  
  <p>edit: The requirement I have is that people must first have an account with the site, before being able to use FBC to share comments to their wall</p>