Uhu, way before they had 40M users: "10 million users and over 50% of them sign in daily." http://theubiquitouslibrarian.typepad.com/the_ubiquitous_librarian/2

Uhu, way before they had 40M users: "10 million users and over 50% of them sign in daily." http://theubiquitouslibrarian.typepad.com/the_ubiquitous_librarian/2006/10/a_night_with_fa.html http://theubiquitouslibrarian.typepad.com/the_ubiquitous_lib...