Facebook was launched by Mark Zuckerberg in 2004 for Harvard students to connect with one another and within a month, over half the undergraduate students had a Facebook profile, it was called thefacebook.com then. Now as of Jan 2011, Over 600 million active users are using  Facebook.
So have you ever wonder how Facebook generates revenue out of it. Facebook made around million in 2009 and having plan to generate billion- billion profit in 2010.
View the amazing infograph to see the business running behind Facebook.
