title: "Duplicate status message" error from Facebook graph API
body: <p>I get the following message in the facebook graph API:   </p>
  
  <pre><code>{
    "error": {
      "message": "(#506) Duplicate status message",
      "type":"OAuthException",
      "code":506,
      "error_data": {
        "kError":1455006
      }
    }
  }
  </code></pre>
  
  <p>Can anybody explains what does it mean?</p>