Facebook is a classic Silicon Valley success story: From a Harvard dorm to the top of the world.
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 $US265.3 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.)
In 2003, Harvard sophomore Mark Zuckerberg would build a program called 'Facemash.' It was a 'Hot Or Not' style app using the pictures of his classmates that he hacked from the school administration's dormitory ID files. It got 22,000 pageviews from 450 people in the first four hours it was up. A few days later, Harvard ordered it to be taken down, citing copyright and security concerns.
Zuckerberg faced disciplinary action from Harvard, but was allowed to stay at the school. Undeterred, he launched Thefacebook on February 4, 2004.
Six days after the launch, three Harvard seniors — twins Cameron and Tyler Winklevoss and Divya Narendra — claimed that they had reached an agreement with Zuckerberg where he would create a website called HarvardConnection.com for them, but he abandoned them and used his own ideas to create Facebook.
Facebook's first ad sales pitch deck came out just a few months after the launch, and showed the site's amazing early growth - and its limited functionality.
At this point, Facebook was still run out of his dorm room. But it was time to get serious: Zuckerberg dropped out of Harvard in 2004, much like Bill Gates before him.
Around the same time, in June 2004, Facebook moved to Palo Alto, California, into a tiny office downtown. Back then, the company was known for being as much a party hub as it was a serious startup.
That office, right in downtown Palo Alto, was incredibly unassuming: See that glass door, number 471? That led to a set of stairs that would take you up to the space. (I briefly worked for a company that would use the same office space, years later. There's a good sushi place around the corner.)
No, seriously, they loved beer. Here's Andrew McCollum with a lady friend while a Facebook employee gets beer from the office keg.
The same month it moved into these offices, Facebook got its first outside funding in the form of a $500,000 investment from famed ex-PayPal executive Peter Thiel (left, with fellow PayPal exec and later Tesla founder Elon Musk on the right).
By this point, Facebook was starting its rapid ascent towards cultural superstardom. In May 2005, Facebook raised $13.7 million in funding. In 2006, Facebook created its iconic and breakthrough News Feed, which gave people a real-time stream of what their friends were doing.
In late 2007, Zuckerberg met a Google executive named Sheryl Sandberg at a Christmas party. At the time, she was considering taking a new position with the Washington Post. But after meeting Sandberg, Zuckerberg decided that Facebook needed a Chief Operating Officer, and managed to convince her to come aboard in early 2008.
It was a prescient hire: Facebook was already growing quickly, but the rise of the smartphone brought with it a lot more users. In 2009, Facebook moved into a slightly larger Palo Alto office in the Stanford Research Park, amid explosive growth: By late 2010, it hit a trillion pageviews a month.
That space wouldn't hold Facebook for long. In 2011, the social network moved into a corporate campus once occupied by Sun Microsystems, which had fallen from grace and been acquired by Oracle.
Facebook even established the main thoroughfare of the campus as 'Hacker Way,' referring to Zuckerberg's famous philosophy of the same name: 'Move Fast and Break Things.'
Facebook had also established itself as a major political power at this point. That was perhaps most prominent in February 2011's Egyptian uprising, which was largely organised via social networking sites like Facebook.
On the flip side, Zuckerberg himself has only gotten more involved with politics over the years, and has spoken to world leaders in support of spreading Internet access all over the globe.
Starting that same year, in 2012, Facebook employees were given the legendary 'Little Red Book,' a book of propaganda-like slogans to make sure that the growing company's employees were all on the same page.
Later in 2012, Zuckerberg somehow found the time to marry his long-time girlfriend Priscilla Chan, whom he met while still a Harvard student.
Facebook is always on the lookout for the next startup that threatens to disrupt it. So the company has snapped up a bunch of hot startups along the way, including photo-sharing service Instagram, which it bought for $1 billion in 2012, and now has more than 400 million users...
...early-stage virtual reality company Oculus, which Facebook bought in March 2014 for $2 billion...
...and mobile messaging company WhatsApp, which Facebook paid a whopping $19 billion for in February 2014. Its cofounder Jan Koum, is now a Facebook board member, and the service now has more than 900 million users.
By the time that Facebook turned 10 years old, on February 3, 2014, over 1.23 billion people were visiting the social network every month -- a billion of them on their mobile devices. The world had changed, but Facebook just kept growing.
To support all that growth, Facebook has to expand its offices. Just this year, Facebook opened a new campus, designed by legendary architect Frank Gehry, to support over 2,800 employees.
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