According to a December report by the Pew Internet and American Life Project, 11% of online American adults said they use a microblog like Twitter or Yammer, or the microblogging feature on one of the other social network sites to share updates about themselves or to see the updates of others.
These services have been most avidly embraced by young adults. Nearly one in five (19%) online adults ages 18 to 24 have ever used microblogs, as have 20% of online adults 25 to 34. Use of these services drops off steadily after age 35 with 10% of 35 to 44 year olds, 5% of 45 to 54 year olds, 4% of 55-64 year olds and 2% of those 65 and older using Twitter.
These “status updaters” are also a mobile bunch; as a group they are much more likely to be using wireless technologies -- laptops, handhelds and cell phones -- for Internet access, or cell phones for text messaging.
View the report, Online Activities and Pursuits.
Meanwhile, while you are not tweeting, you can read about last week's Shorty Awards, which honored the best tweeters, as determined by a popular vote from from Wired.com.