Social network Facebook officially hit the 1 billion

 Facebook CEO Mark Zuckerberg posted a brief note on the website to confirm that the social networking site now has over a billion active users.

Here's the note in full:
      "This morning, there are more than one billion people using Facebook actively each month.If you're reading this: thank you for giving me and my little team the honor of serving you.Helping a billion people connect is amazing, humbling and by far the thing I am most proud of in my life.I am committed to working everyday to make Facebook better for you, and hopefully together one day we will be able to connect the rest of the world too."

 Facebook reached the 500 million landmark in July 2010, so it's taken a little over two years for the company to clock the next half-a-billion."
 Zuckerberg also released a fact sheet on the one billion users. Here are the highlights:

• Over 1.13 trillion likes
• Over 600 million mobile users
• 140.3 billion friend connections
• 219 billion photos uploaded
• 17 billion location-tagged posts, including check-ins
• 62.6 million songs have been played 22 billion times - that's about 210,000 years of music
• The median age of the user is about 22
• The top five countries where people connected from at the time we reached this milestone were Brazil, India, Indonesia, Mexico and the United States (in alphabetical order).

One Billion Fact Sheet

Evolution of a Facebook

Facebook at one billion:

• Median user age: 22
• Top countries (alphabetical order): Brazil, India, Indonesia, Mexico, United States
• Mobile users: 600 million

 At 500 million (July 2010):

• Median user age: 23
• Top countries: Brazil, India, Indonesia, Mexico, United States
• Users who joined the site at this point now have an average of 305 friends