02/04/2011 09:47 am ET Updated May 25, 2011

Facebook Celebrates 7th Anniversary: What Was Your First Facebook Experience?

Facebook, the world's largest social networking site, was created seven years ago today, on February 4, 2004.

Less than a decade later, it has 550 million members spending over 700 billion minutes a month on the site, which is available in more than 70 languages and has been valued at over $50 billion.

Happy birthday Facebook. My, how you've grown.

Facebook was originally "" and was initially open only to Harvard students, then other college students, then high-schoolers, then, finally, the general public. Today 70% of its users are outside the U.S.

Facebook co-founder and CEO Mark Zuckerberg has received both accolades and his fair share of criticism: he was honored as TIME's Person of the Year, has been likened to Steve Jobs, and was celebrated for his generous philanthropy. He's also suffered intense scrutiny, particularly when it comes to privacy. In instant message conversations he sent as a young twenty-something while at Harvard, Zuckerberg mocked Facebook's early users, calling them "dumb f--ks" for sharing "over 4,000 emails, pictures, addresses, SNS" with his site (He's since apologized).

Given how much we share with the website, our Facebook profiles have become intimate, personal repositories for our memories and activities, both online and off. They are the online equivalent to a treasured box of old photos, messages, and ticket stubs. For many, breakups and hookups, birthdays and births, have played out on the site.

What does Facebook mean to you? Share your first Facebook memory with us using the "Add a Slide" button below, or tweet it using the hashtag "#Facebookmemory."