title: Do I need "offline_access" permission if I request publish_stream?
body: <p>For Facebook, I requested <strong>email and publish_stream</strong>.</p>
  
  <p>I got their access_token. yay!</p>
  
  <p>Now....when I try to send a POST to their wall (/feed), I get this message:</p>
  
  <pre><code>{"error":{"type":"OAuthException","message":"Error validating access token: Session has expired at unix time 1315342800. The current unix time is 1315363038."}}
  </code></pre>
  
  <p>Why? Do I need offline_access?</p>