title: Tracking the external website which generated a Facebook Like
body: <p>We have various properties across the internet, which each have "Like" buttons for the same Facebook sites. We want to be able to track which sites (which domain) generated the Like.</p>
  
  <p>We are using the XMLFB Facebook Like button implementation, and also filled out the <code>data-ref</code> parameter with the site (although from what I've read the <code>data-ref</code> is just used to track like clicks from a Facebook profile after a Like occurs). Our goal is to attribute each Like to each specific Like button or domain in which the Like occured.</p>
  
  <p>Here is what I tried:</p>
  
  <ul>
  <li>Setting up insights on the Facebook site which the Like was generated for. There are no explicit sources by domain or data-ref.</li>
  <li>Setting up insights on the Facebook site which generated the like (insights for websites). I found the insights was not logging the Likes correctly. </li>
  <li>I looked into the FQL and the closest thing i got to metrics on detailed like source data was the <code>page_fans_by_like_source</code> but that turned out to be irrelevant. </li>
  </ul>
  
  <p>Does anyone have any insights as to how I can achieve my desired functionality?</p>