I want to be able to moderate Facebook comments that I have integrated. They say to use the following tag.
<meta property="fb:app_id" content="{YOUR_APPLICATION_ID}"/>
But from where do I get the app_id
and where do I paste this tag in my code?
Set yourself up with an application using the Facebook Developer App.
If this is your first Facebook application you will have to validate your account as a developer. Once you have the App ID, include it in the initialisation of your comments plugin, and you can use that interface to manage the comments.