Side note, but I'm curious: what do you use to send messages directly to the Facebook messages inbox? The standard FB dialog or is there some Graph API endpoint that will let you do that? My memory of the FB API is hazy, but a quick scan seems to indicate that you still can't post messages to the inbox without popping up the UI.
Great question - we're using the xmpp_login permission that Facebook Auth provides to get messaging permission from the user and we have an XMPP server running on Node.js that handles all the messaging.
