One in five Americans publish, read status updates

• 19% of internet users use Twitter or another service to share updates, up from 11% in Dec. '08

• The more devices someone owns, the more likely they are to use Twitter or another service to update their status
• 39% of internet users with four or more internet-connected devices (laptop, cell phone, game console, ... ) 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

• Median age of a Twitter user is 31. Median age for MySpace is 26. Median age for LinkedIn is 39. Median age for FaceBook is 33

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