A great extension! Thanks for making it _SO_ easy to setup. I wonder if we can automatically populate the name/email fields for users logged into Facebook. Or make those fields not required if you're logged into FB. Something to reduce the barriers to entry for posting a comment. I also think there should be something to indicate that their comments will be pulled into Facebook.
I'm a developer, and just getting started in WordPress, so if you think an extension to WP-FB is needed to allow for these things and want to give me a point in the right direction, I'd be glad to take a stab at it.