title: Why is my browser not sending any referrer?
body: <p>I have an html page with the following code.</p>
  
  <pre><code>  &lt;form method="POST" action="https://formspree.io/email"&gt;
      &lt;input type="submit" value="SEND"/&gt;
    &lt;/form&gt;
  </code></pre>
  
  <p>My browser does not include the referrer header field in the http request when a user submits the form. Why wouldn't it ?</p>