title: $_GET parameter is not populated, even though URL has appropriate form
body: <p>I'm working on a new Wordpress site that is exhibiting some strange behaviour. I pass it a URL with GET parameters in it, and the <code>$_GET</code> parameter is not populated.  I see in the <code>$_SERVER</code> parameter that the <code>REQUEST_URI</code> has the full URL there, completed with the <code>?var=value</code> part, but no love in the <code>$_GET</code> variable.</p>
  
  <p>The URL is being redirected with <code>mod_rewrite</code>, but given the fact that the <code>REQUEST_URI</code> shows the full thing, I'm thinking that's not the likely culprit.</p>