title: What is a Payload?
body: <p>Im in webpage and they say: "Download the payload"
  They say i can use this to download the payload:</p>
  
  <p><a href="https://addons.mozilla.org/en-US/firefox/addon/live-http-headers/" rel="nofollow">https://addons.mozilla.org/en-US/firefox/addon/live-http-headers/</a></p>
  
  <p>But what exactly is the payload ?</p>