- just some numbers, might be relevant http://blog.nielsen.com/nielsenwire/global/facebook-and-twitter-post-large-year-over-year-gains-in-unique-users/ http://

- just some numbers, might be relevant http://blog.nielsen.com/nielsenwire/global/facebook-and-twitter-post-large-year-over-year-gains-in-unique-users/ http://blog.nielsen.com/nielsenwire/global/facebook-and-twit...