How To Insert Facebook Comments plugin

You can insert the Facebook comments on Listing details page using the following code: {module name="facebook_comments" function="display_comments" url="{page_url id="listing"}|cat:$listing.id"}

For user profile you can use the following code: {module name="facebook_comments" function="display_comments" url="{page_url id='users'}"|cat:$user.id}

Please note that you need to set Facebook ID and secret in Admin Panel -> System Settings. You can find more information in Facebook, Twitter, Google and OpenID Login section.