Wow - the Pew Internet and American Life Project reported that 19% of U.S. adults use Twitter or some other form of status update services.

Some other interesting findings of the research:

• Individuals with wireless devices were three times more likely to use the services.
• Likelihood increases with a higher number of Internet-enabled devices owned.

As internet-enabled devices continue to proliferate and take on a variety of forms, it is interesting to think about the ramification of increased Twitter use in the general population, not to mention the growth in mobile internet behavior.

Though Twitter was originally used more by older males with high-income, it is increasingly the domain of younger users, age 18 - 44 in particular: