Twitter users are sending 200 million tweets a day, up from 65 million a year ago, the micro-blogging service said Thursday.
"For context on the speed of Twitter's growth, in January of 2009, users sent two million tweets a day," Twitter said in a blog post.
The San Francisco-based Twitter was founded in 2006. It has more than 200 million users.
According to a recent study by the Pew Research Center, 13 percent of the online US adults aged 18 and older use Twitter, up from eight percent in November 2010.Twitter users sending 200 million tweets a day - Yahoo! News