Great plugin - but there's an issue with Permalinks.
When you have WP-Facebook enabled, every new slide is published to your Facebook page as intended.
But if you click on the posted slide in Facebook, it returns a 404 error back on your site as the Permalink isn't valid. For example:
I've tried to both point to another URL (that works fine on my site) but doesn't fix the Facebook referral issue.
Its not the Facebook plugin as posts are working just fine.