The original way Facebook met the world in 2004.
NEW YORK — It has been 10 years since a Harvard sophomore named Mark Zuckerberg created a Web site called Thefacebook.com to let his classmates find their friends online.
They did. And in the decade since, so have more than a billion people, not just American college students but also farmers in India, activists in Egypt, and pop stars in South Korea.
Facebook Inc. has transformed how much of the world communicates. Mr. Zuckerberg’s insistence that people use real identities, not quirky screen names, helped blur, if not erase entirely, the divide between our online and offline worlds. Long-lost friends are no longer lost. They are on Facebook.
From its roots as a Web site with no ads, no business plan, and a hacker ethic, Facebook has grown into a company worth $150 billion, with 6,337 employees and a sprawling headquarters in the heart of Silicon Valley. Born in the age of desktop computers, three years before the iPhone’s debut, Facebook is now mainly accessed on mobile devices.
“People often ask if I always knew that Facebook would become what it is today. No way,” Mr. Zuckerberg wrote — where else — on his Facebook page Tuesday. “I remember getting pizza with my friends one night in college shortly after opening Facebook. I told them I was excited to help connect our school community, but one day someone needed to connect the whole world.”
Facebook has had plenty of stumbles along the way, from privacy concerns to user protests when Facebook introduced new features, not to mention a rocky public stock debut in 2012. Even its origin was the subject of a lawsuit and a Hollywood movie.
So far, though, Facebook has trudged on.
Thefacebook began as a way for students at Harvard to connect. It has since grown into a social media empire with more than 1.23 billion users worldwide.
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As Facebook enters its second decade, the company faces a new set of challenges in reaching the next billion users. It must also keep the existing set interested even as younger, hipper rivals emerge and try to lure them away.
There are 1.23 billion Facebook users today, or roughly 17 percent of the world’s population. Facebook is here to stay. It’s reached critical mass.
“One of the things Facebook has been good at is that it’s very easy to use and understand,” said Paul Levinson, professor of communications and media studies at Fordham University. “It’s a much friendlier system than any email system."