title: Facebook Exception #100 : Does not resolve to a valid user ID
body: <p>While trying to post to a user's facebook wall using PHP, I am getting the error</p>
  
  <pre><code>{
      "error": {
          "type": "OAuthException",
          "message":"(#100) http:\/\/spats.in\/nssc2 does not resolve to a valid user ID"
      }
  }
  </code></pre>
  
  <p>This is my code :</p>
  
  <pre><code>$apprequest_url = "https://graph.facebook.com/feed";
  $mymessage="Hello World!";
  $parameters = "?" . $access_token . "&amp;message=" . urlencode($mymessage) . &amp;id=".urlencode('http://spats.in/nssc2')."&amp;method=post";
  $myurl = $apprequest_url . $parameters;
  $result = file_get_contents($myurl);
  </code></pre>
  
  <p>What is the problem?</p>