I add the following code to enable a custom field to disable fb comments for particular page/post.
I think it can be very useful for many people:
// Simon Weil - 14.10.2012 - if fb comments closed for current page/post return $field_status = get_post_custom_values("disable_seo_fb_comments"); if ( isset($field_status) && $field_status === "true" ) return $comments;
on line 407 in seofacebook.php (function FbComments).
Thanks for a great plugin!