title: Tracking Incoming Redirects To Your Site
body: <p>Is there a way in which I can find out if a user arrived at my site via a redirect?</p>
  
  <p>Here's an example: There are two sites, first.com &amp; second.com. Any request to first.com will do a 302 redirect to second.com. When the request at second.com arrives, is there anyway to know it was redirected from first.com?</p>
  
  <p>Note that in this example you have no control over first.com. (In fact, it could be something bad, like kiddieporn.com.)</p>
  
  <p>Also note, because it is a redirect, it will not be in the HTTP referrer header.</p>