Twitter reaches 100 million active users

The inexorable rise of the actively twittering masses has hit a new high, with 100 million people regularly tweeting their fascinating insights into what they had for breakfast and how happy they are that Beyonce is pregnant.
Oh no wait, apparently "active user" just means someone who's logged into Twitter, so make that 60 million tweeting and 40 million just "listening to what's happening in the world right now", according to the little bluebird.

But they're not all just spreading celeb gossip and breaking gagging orders: 35 of them are global heads of state, including Julia Gillard in Australia, the Mayor of London and the posse of US presidential hopefuls.