title: Allowing Facebook user to comment on a webpage
body: <p>I have a working website that has comments section for each page (Codeigniter/PHP). It allows only locally registered users to post a comment. Now I also want to allow a non-registered Facebook user to post a comment.</p>
  
  <p>Part around login-in is fine and it's working, the problematic part comes after that.</p>
  
  <p>After the user authenticates with their Facebook account the website receives user access token. A submitted comment will be saved to the database. But, even if the website gets long-lived user access token it will last only for 60 days. After the token expires, when someone visits the page that was commented, the website code will not be able to get name and profile image of the Facebook user that submitted the comment.</p>
  
  <p>I've went through Facebook docs, Graph API, but couldn't find anything helpful. The only solution that I have in mind is to grab profile image and name of the Facebook user and to store that information in the database for later use.</p>
  
  <p>Did I miss something? Any suggestions?</p>
  
  <p>Thanks in advance,</p>