So David Cameron can't be bothered with Twitter. Clearly he is not as smart as Obama's campaign team who used Twitter ruthlessly and cleverly to reach out to different sections of the electorate.
Still if he's having second thoughts he might want to read about how many progressive companies are using Twitter and getting some pretty stunning results:
http://itsopen.co.uk/twitter-for-businesses
Memo to Cameron: the media landscape has fundamentally altered and unless the Tories participate they will lose influence.