title: How do you enable customers use their openid on your website, just like stackoverflow?
body: <p>I want customers to use their openId on my site. I googled for this but didn't find any good tutorial. I use PHP and MySQL.</p>
  
  <p>There is one at Plaxo. But it says we should download something from JanRain.com.</p>
  
  <p>I saw the openId module of Drupal. It doesn't want anything to be downloaded.</p>
  
  <p>Can anyone tell me what to do exactly?</p>