title: Facebook App on Subdomains: Site URL vs App Domains
body: <p>According to facebook and other stack overflow questions, subdomains are supported in the App Domain field, however in the Site URL field (under Website with Facebook Login) they aren't. I'm creating an app for use on many different subdomains (actually chained subdomains like <a href="http://clientname.projectname.mydomain.com">http://clientname.projectname.mydomain.com</a>) that allows users to login through facebook (via js), and then retrieves their data (both through js and php).</p>
  
  <p>How do you setup your facebook app so it supports multiple subdomains?</p>