Facebook's Growth And Reach At A Glance

In just a few years, Facebook has grown from an idea hatched at Harvard to a worldwide social media phenomenon potentially valued at about $100 billion. Review key moments on Facebook's road to growth, see where it's most popular, and compare how much the shares held by Mark Zuckerberg and other Facebook executives could be worth once the company goes public.

Copyright 2012 National Public Radio. To see more, visit http://www.npr.org/.