title: how to hide site url in facebook when share page?
body: <p>when i use comment facebook plugin, then i'm comment in my site page. in my facebook timeline, i see
  picture, title, url site, and description.
  How to hide that's url site on facebook timeline ?</p>
  
  <p>i'm not wrote <code>&lt;meta property="og:site_name" content=""/&gt;</code> there.</p>
  
  <p>my code show below:</p>
  
  <p><code>&lt;meta property="og:title" content="&lt;?php echo trim($title); ?&gt;"/&gt;
  &lt;meta property="og:description" content="&lt;?php echo $desc;?&gt;" /&gt;
  &lt;meta property="og:image" content="&lt;?php echo $url_pic; ?&gt;"/&gt;</code></p>
  
  <p>thanks</p>