title: How to enable commenting on the Facebook Like Button
body: <p>I'm integrating the <a href="http://developers.facebook.com/docs/reference/plugins/like" rel="nofollow noreferrer">Facebook Like Button</a> into a site. The likeing functionality is working fine except that you cannot add comments to your like after you've clicked the like button. Several sites including <a href="http://www.cnn.com/2010/TECH/05/07/cnet.facebook.privacy/index.html" rel="nofollow noreferrer">CNN</a> has this working so this should be possible.</p>
  
  <p>The docs mention that you need to use the <a href="http://developers.facebook.com/docs/reference/javascript/" rel="nofollow noreferrer">JavaScript SDK</a> to get commenting to work, which I am doing; however I cannot get commenting to show up.</p>
  
  <blockquote>
    <p>A fuller-featured Like button is
    available via the  XFBML tag
    and requires you use the new
    JavaScript SDK. The XFBML version
    allows users to add a comment to their
    like as it is posted back to Facebook.</p>
  </blockquote>
  
  <p>I cannot find details on which options are available for this more "fully-featured" XFBML like button.</p>
  
  <p>I'm wondering if there is a setting that I need to add, an option that I'm not passing in, or anything that I've overlooked.</p>
  
  <p>I am on a dev server, and I'm linking back to the live site for now. Perhaps the ContactURL and the base URL of the liked page need to be the same in order to get commenting to work?</p>
  
  <p>Here's how I'm embedding the facebook like button:</p>
  
  <pre><code>&lt;!-- facebook --&gt;
  &lt;div id="fb-root"&gt;&lt;/div&gt;
  &lt;script type="text/javascript"&gt;
    window.fbAsyncInit = function() {
      FB.init({appId: 'XXXXXXXXXXXXXX', status: true, cookie: true, xfbml: true});
    };
    (function() {
      var e = document.createElement('script'); e.async = true;
      e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js';
      document.getElementById('fb-root').appendChild(e);
    }());
  &lt;/script&gt;
  &lt;!-- facebook --&gt;
  
  ...
  
  &lt;fb:like href="example.com" layout="button_count" show_faces="false" width="100" colorscheme="dark"&gt;&lt;/fb:like&gt;
  </code></pre>