You'll often hear that only old people use email. It's a notion driven by the whole IM/SMS constantly-connected youth thing.
Latest stats suggest that what Google's Eric Schmidt famously described as 'a poor man's email', twitter, is proving a huge hit with, how can we put this delicately, the less young person.
Of the 7m users up to Feb 09:
|Age Group||Unique Audience||Composition %|
|18 - 24||**||**|
|25 - 34||1,379,000||19.6|
|35 - 49||2,935,000||41.7|
|source: Nielsen NetView, 2/09, U.S., Home and Work|
**These demographics have insufficient sample sizes