Read your Facebook Messages while staying Unseen
It's like a keyhole to your Facebook message inbox.
[ WARNING ]
• For some people the connection to Facebook doesn't work. If it's the case for you it would be awesome if you write me an email so I can fix the problem; email@example.com
[ TRY IT ]
• To try this app without installing go to http://www.inboxn.com/facebook-unseen
[ FEATRURES ]
Not being a Facebook extension but being a separate app, you can;
• Go on facebook.com/messages and set your messages as read/seen
• You can exactly decide when a message is going to be stamped as "seen"