Twitter

Twitter, the social media microblogging site, celebrates its third birthday this week and it seems passion for the site knows no bounds.
Although its growth is exponentionally faster than Facebook, the latter still dwarfs it in user numbers. More interestingly, has been the attention Twitter has been getting from unlikely areas. Stephen Fry has been on the site since its launch, but now 'celebs' like John Mayer and Ashton Kutcher are leaping on the bandwagon.
The impact on brands will be immense. ComCast has for quite some time used the tool as a way of talking to customers, and now it looks like the media is using it too. The Guardian updates followers regularly and now Chicago Tribune has takent the unprecedented step of flagging its contributors in its flannel panel as Twitterers. Will other newspapers follow suit?