Robert Galbraith/Reuters
It's made Mark Zuckerberg into a legendary figure, and turned a hoodie and tennis shoes the height of tech industry fashion.
These days, Facebook is worth $265.3 billion, with over 1.5 billion people using the site every month.
Here's the story behind Facebook's insane growth, from February 2004 through today. (Spoiler alert: It involves a lot of beer.)