Point at the faces in this timeline and FB will either ask you to identify them or show you the names someone else has already typed.
https://www.facebook.com/photo.php?fbid=10153277864266937&set=a.453108571936.236478.649731936&type=3&theater
This seems relevant: http://www.wired.com/1999/10/monitor-this-echelon/
