19% of internet users now say they use Twitter or another service to share updates about themselves, or to see updates about others, according to the Pew Internet & American Life Project.

This represents a significant increase over previous surveys in December 2008 and April 2009, when 11% of internet users said they use a status-update service.

Three groups of internet users are mainly responsible for driving the growth of microblogging:

• social network website users,
• those who connect to the internet via mobile devices, and
• younger internet users – those under age 44.

Pew also found that, the more Internet devices you own, the more likely you are to be microblogging. 39% of internet users with four or more internet-connected devices (such as a laptop, cell phone, game console, or Kindle) use Twitter, compared to 28% of internet users with three devices, 19% of internet users with two devices, and 10% of internet users with one device.