How would that even work in practice? What's the use case that's not already possible via http://graph.facebook.com http://graph.facebook.com (besides hoovering

How would that even work in practice? What's the use case that's not already possible via http://graph.facebook.com http://graph.facebook.com (besides hoovering up emails). Besides, if they did somehow integrate further you'd all be crowing about how Facebook was doing an embrace / extend / extinguish maneuver.