Just for the record really, but am reading The Groundswell by Charlene Li and Josh Bernoff from Forrester. They accompany the book with a website which includes a profile tool. For this to make sense you need to understand their ”Social Technographics®” classifications which describe: Inactives, Spectators, Joiners, Collectors, Critics, and Creators.
Their profile tool includes data for the UK from 2008, and provides the following slices organised by age group.
Data from Forrester Research Technographics® surveys, 2008.








[...] Data on the uptake of Web 2.0 technology and participation rates amongst different age groups suggests that, to date at least, those of us beyond the age of 40 prefer a more solitary mode of engagement with IT. (see http://michael.wilcox.net/2009/03/17/the-groundswell-figures-for-uk-2008/) [...]
By: Web 2.0 not just for the kids? « John Sotillo’s Blog on 29 March 2009
at 9:47pm