title: How do you enable customers to log in to your site using their Google account?
body: <p>I just saw <a href="http://uservoice.com/login" rel="nofollow noreferrer">http://uservoice.com/login</a>. It uses Google accounts, <a href="http://en.wikipedia.org/wiki/Myspace" rel="nofollow noreferrer">Myspace</a>, Yahoo, <a href="http://en.wikipedia.org/wiki/OpenID" rel="nofollow noreferrer">OpenID</a> and all to sign in customers into its site? Can I do that?</p>
  
  <p>I mean, customers need not register to my site. They can just sign in with their accounts on the above sites.</p>
  
  <p>If you've a solution, I'd prefer a PHP and MySQL based one.</p>