title: how to use openid for login system in website that allow only authorized users to access site
body: <p>I m creating website that use openid for login system(login with gmail/yahoo accounts). I want only authorized users(users whose info. I already stored in my DB) should access site. 
  With openid anyone can login with their gmail/yahoo accounts but I don't know how do I check current user info against my DB and allow access to only authorized users. I m using lightopenid for openid implementation.</p>
  
  <p>Please give me any secure suggetions. Thanks in advance.</p>