title: htaccess rewrite url is causing error with og metatags
body: <p>My church website has og meta tags for the description and images and all that jazz. They have all been working fine.
  Recently they asked me to remove the .php extensions from the url, so I used htaccess to achieve that. All the rewriting seemed to be working fine using this.</p>
  
  <pre><code># Turn mod_rewrite on
  RewriteEngine On
  
  # Make all requests have the www. in them
  RewriteCond %{HTTP_HOST} ^ourchurch\.com
  RewriteRule ^(.*)$ http://www.ourchurch.com/$1 [R=permanent,L]
  
  ## don't touch /my_admin_controls URIs
  RewriteRule ^my_admin_controls/ - [L,NC]
  
  ## don't touch /ourScheduler URIs
  RewriteRule ^ourScheduler/ - [L,NC]
  
  ## hide .php extension
  # To externally redirect /dir/foo.php to /dir/foo
  RewriteCond %{THE_REQUEST} ^[A-Z]{3,}\s([^.]+)\.php [NC]
  RewriteRule ^ %1 [R,L,NC]
  
  ## To internally redirect /dir/foo to /dir/foo.php
  RewriteCond %{REQUEST_FILENAME}.php -f
  RewriteRule ^ %{REQUEST_FILENAME}.php [L]
  </code></pre>
  
  <p>Now, for some reason the facebook og tags are not working properly.
  I looked in the debugger and it said there was a redirect error.</p>
  
  <p>Anyone have any ideas where I went wrong?</p>
  
  <p>...edit...
  sample of the og</p>
  
  <pre><code>&lt;head&gt;
  &lt;meta charset="UTF-8"&gt;
  &lt;meta property="og:image" content="http://www.ourchurch.com/images/fblogo.jpg"/&gt;
  &lt;meta property="og:title" content="Fall Retreat"/&gt;
  &lt;meta property="og:url" content="http://www.ourchurch.com/fall_retreat.php"/&gt;
  &lt;meta property="og:site_name" content="Our church .....etc etc"/&gt;
  &lt;meta property="og:description" content="Come for fellowship...etc etc."/&gt;
  &lt;link rel="stylesheet" href="css/main.css" type="text/css" media="screen" /&gt;
  &lt;title&gt;Retreat Registration&lt;/title&gt;
  &lt;/head&gt;
  </code></pre>