19% of Internet Users Use Twitter

One of five (19%) US internet users now uses Twitter or another status-update service, according to an Oct. 21, 2009, article from the Pew Internet & American Life Project. This figure marks a big jump in Twitter usage over the 11% found in two previous Pew surveys, one from April 2009 and the other from December 2008.

Three groups—people who use social networks, those who access the internet via a mobile device, and younger internet users (under 44 years old)—account for most of the increase in Twitter use, say the article's authors, Susannah Fox, Kathryn Zickuhr, and Aaron Smith:

Social Network Users

Some 35% of internet users who use social network sites such as MySpace, Facebook or, LinkedIn also use Twitter (35%), compared with just 6% of internet users who do not use social network sites. Those who use social networks account for 47% of all internet users, according to September 2009 data collected by the Pew Internet & American Life Project.

Statistical analysis of data from the Pew's Internet Project's September 2009 survey reveals that the use of social networks predicts Twitter use, independent of social networkers' relative youth or propensity to access the internet via a mobile device:

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