Diary: O&M is adland's Gaga

In the week that Lady Gaga hit the headlines for becoming the most-followed celebrity on Twitter, Ogilvy & Mather managed to score a personal triumph of its own on the social networking site by surpassing the 30,000 mark.

The agency may not be scaling the heights the Paparazzi singer has reached just yet, but it is still no mean feat, particularly when you consider that the combined number of followers of Bartle Bogle Hegarty, Wieden & Kennedy and VCCP reach barely half that total.