title: Why does Facebook's Open Graph protocol require an fb:admins or fb:app_id .. and what is the importance of this property?
body: <p>I'm playing around with adding some <a href="http://developers.facebook.com/docs/opengraph/" rel="nofollow noreferrer">Facebook Open Graph meta tags</a> to my web site, to help with Facebook sharing of my website content.</p>
  <p>One of the tags is this:</p>
  <pre><code>fb:admins or fb:app_id
  </code></pre>
  <blockquote>
  <p>A comma-separated list of either Facebook user IDs or a Facebook
  Platform application ID that administers this page. It is valid to
  include both fb:admins and fb:app_id on your page.</p>
  </blockquote>
  <p>Questions:</p>
  <ul>
  <li>What is the importance of this property?</li>
  <li>Administers <em>what</em> page?</li>
  <li>Why do we need to administer some page?</li>
  </ul>