title: jQuery DIV refresh
body: <p>I'm using the simple jQuery DIV refresh code.</p>
  
  <blockquote>
    <p>var refreshId = setInterval(function()
    {
      $('#refreshdash').load('dashboard.php?cache=');
    }, 4000);</p>
  </blockquote>
  
  <p>Right? Some guy informed me that adding "?cache=" to the end of the file that you going to have refreshed, will help lower bandwidth, etc, as he told me that it caches the file or something of the sort.</p>
  
  <p>I didn't believe him what so ever. Is this true? ...and if not, what does that actually do, nothing?</p>