title: How can I get Facebook's open graph scraper to successfully parse my single-page website hosted via GitHub Pages?
body: <p>One of my friend set up a simple one-page website and asked me to help to integrate open graph metadata so that sharing on Facebook provides a better user experience. </p>
  
  <p>Unfortunately, Facebook doesn't recognize some values and Facebook's URL Debugger doesn't really help, cause it shows stuff from the registrar by default and fails with the error message <code>Error parsing input URL, no data was cached, or no data was scraped.</code> when I click on the <strong>Fetch new scrape information</strong> button. Also, when I click on <strong>See exactly what our scraper sees for your URL</strong>, I get the following error <strong>Document returned no data</strong>.</p>
  
  <p>The URL is: <a href="http://know-your-limits.com/" rel="nofollow">http://know-your-limits.com/</a>. The registrar is Gandi and the site is hosted on GitHub. The DNS configuration is as follows: </p>
  
  <pre><code>dig know-your-limits.com +nostats +nocomments +nocmd
  
  ; &lt;&lt;&gt;&gt; DiG 9.8.3-P1 &lt;&lt;&gt;&gt; know-your-limits.com +nostats +nocomments +nocmd
  ;; global options: +cmd
  ;know-your-limits.com.      IN  A
  know-your-limits.com.   10771   IN  A   192.30.252.153
  </code></pre>
  
  <ol>
  <li>Is there something I could do to fix this on something I have control on (ie registrat configuration, GitHub repository update, HTML update) as opposed to stuff I don't have control on (ie GitHub web server)?</li>
  <li>Do you think it is a bug with GitHub hosting?</li>
  </ol>