Five years ago today Biz Stone launched Twittr (no, that's not a typo), "a new mobile service that helps groups of friends bounce random thoughts around with SMS," as he described it on his personal site. Since then, Twitter has evolved into more than just a platform for random thought sharing. It offers serious media coverage--the news of Osama bin Laden's death spread over Twitter, with Donald Rumsfeld's chief of staff, Keith Urbahn confirming the news in a Tweet before Obama made the official announcement. Also, it's helped along revolutions: see Tunisia.

But beyond these profound advancements, Twitter wants to highlight another attribute: its popularity. For its fifth birthday, Twitter has tweeted out the following notable Twitter stats. No mention of revolutions, or breaking news, just what matters most: numbers.

  • Happy Birthday to us!

Twitter, then called Twttr, opened to the public five years ago today. (cc: @jack @biz @ev @noah @csshsh)less than a minute ago via web Favorite Retweet Reply


  • Look how much we've grown.

There were 224 Tweets sent on July 15, 2006. Today, users send that many Tweets in less than a tenth of a second.less than a minute ago via web Favorite Retweet Reply


  • We're big for our age.

Yesterday, we saw more than 600,000 signups. It took us more than *16 months* to reach the first 600,000 Twitter accounts.less than a minute ago via web Favorite Retweet Reply


The last five years have been good to them. Will the next five treat them so well?