All the blogs have a facebook comments box on them by default.
If you want to moderate those comments here: https://developers.facebook.com/tools/comments
First you need to get an APP ID, by adding a new APP https://developers.facebook.com/apps
And save your facebook APP ID, and admin username in the global contacts area in the CMS, then publish...
Your facebook admin username, is your personal facebook account username, not your page username, and not your login email.
Create a personal username here: https://www.facebook.com/username/
You can then moderate all posts in the one place in facebook, and hopefully you get notifications also