title: Facebook like button's iframe
body: <p>I put an facebook like iframe related to each post of some webpage as so </p>
  
  <pre><code>&lt;iframe src="http://www.facebook.com/plugins/like.php?href={$post_url}&amp;amp;
  layout=button_count&amp;amp;show_faces=false&amp;amp;width=90&amp;amp;action=like&amp;amp;
  font=verdana&amp;amp;colorscheme=light" allowtransparency="true" style="border:
  medium none; overflow: hidden; width: 90px; height: 21px;" frameborder="0"
  scrolling="no"&gt;&lt;/iframe&gt;
  </code></pre>
  
  <p>The count works well but when clicking the like button, no popup is showed to enter a message. Could someone explain ? (my site uses an app facebook, and there are og meta for each page, could that causes problem ?)</p>