title: Two Different Google OpenID URLs
body: <p>I just realized there are two google open id urls I can find online.</p>
  
  <ul>
  <li><a href="https://www.google.com/accounts/o8/id">https://www.google.com/accounts/o8/id</a></li>
  <li><a href="https://www.google.com/accounts/o8/ud">https://www.google.com/accounts/o8/ud</a></li>
  </ul>
  
  <p>Would you please tell me which one is the right one to use?</p>