After its launch in 2006, it took years (until November, 2008) to collect its first billion tweets. Just one year later, Twitter hit five billion messages. And by about two weeks ago (March 4th), that number had doubled to 10 billion according to GigaTweet. The site pulls in an astonishing 50 million tweets a day, which translates to about 600 tweets a second. Given the current pace of growth, GigaTweet projects that the 20-billion milestone will occur at about mid-September.
Here’s a great infographic from Mashable that chronicles the road to the 10-billionth tweet. It takes a look at what’s been learned about Twitter users and what they’ve been talking about along the way.