This is a great plugin, but I have a feature request.
Currently there is no way to publish to a Facebook Group. I am maintaining a website for a local cycling club, and I want to be able to publish the wordpress blog posts to the club's group.
Groups offer functionality that is distinct from App/Fan pages, and it would be great if SFC also supported groups. So far the only plugin I have found that supports publishing is 'Add link to Facebook' (http://wordpress.org/extend/plugins/add-link-to-facebook/) however it lacks the remainder of the functionality that is present in SFC.