title: What is OpenID "Automatic Login"?
body: <p>What is OpenID "Automatic Login"?</p>
  
  <p>I've never heard this term in a technical sense until today. It has suddenly appeared in Facebook's marketing blog in reference to their new deal with Google.</p>
  
  <p>To be clear, they assert that virtually no other OpenID providers besides Google implement OpenID "Automatic Login", thus no other OpenIDs are currently supported by Facebook.</p>
  
  <p>Does this even exist?</p>
  
  <p>FYI, yes this is a programming question.  I would really love to see the <strong><em>API documentation</em></strong> for this feature.  Please post a link to it if you are familiar with it.  Thanks!!</p>
  
  <p>Facebook announcement:
  <a href="http://www.insidefacebook.com/2009/05/18/facebook-launches-openid-support-users-can-now-login-with-a-gmail-account/" rel="noreferrer">http://www.insidefacebook.com/2009/05/18/facebook-launches-openid-support-users-can-now-login-with-a-gmail-account/</a></p>