title: What is App Domain in Facebook Apps?
body: <p>What is App Domain used for in Facebook Apps?</p>
  
  <p>Somebody had asked the same in <a href="https://stackoverflow.com/questions/8574344/what-is-app-domain-in-facebook-apps">What are App Domains in Facebook Apps?</a> but I didn't really get it.</p>
  
  <p>What I am trying to do is "publish actions" from a mobile app.  The object to be published must be stored in a separate web page.  And the domain of the separate page is supposed to be included in app domains.</p>
  
  <p>Is app domain applicable for Mobile apps as well?</p>