Q:

How to get notified when someone commented on my site using facebook commenting system?

Having used the Facebook commenting plugin on my site, I want to get notified when someone commented on my site 
They have provide how to get notified, but I don't understand how to use it! 
Can anyone help me?

A:

It's not programmatical question, but I'll answer it. NO, it's NOT possible by their default options. 
You can use ther JsSdk
or you can just see these comments on your site. 
FB.Event.subscribe('comment.create', function(response) {
   // send ajax request to your server which will notify you about new comment
});

