title: <form method="link" > or <a>? What's the difference?
body: <p>I <a href="http://www.htmlgoodies.com/tutorials/buttons/article.php/3478871">saw</a> that we can write:</p>
  
  <pre><code>&lt;form method="link" action="foo.html" &gt;
  &lt;input type="submit" /&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>To make a "link button".</p>
  
  <p>But I know we can write:</p>
  
  <pre><code>&lt;a href="foo.html" &gt;&lt;input type="button" /&gt;&lt;/a&gt;
  </code></pre>
  
  <p>Which will do the same.</p>
  
  <p>What's the difference? What's their browser compatibility?</p>