Twitter's amazing growth in just seven years

Founder Jack Dorsey sent the first tweet on this date in 2006. I sent my first on the same date in 2009. I found my voice and a career as a media commentator, so Happy Birthday, says Barbara Scully

ON Mar 21, 2006, Twitter founder Jack Dorsey (@jack) sent the first tweet. It said “just setting up my twttr”. Happy Birthday Twitter.

Today is also my fourth anniversary on the social networking site. On Mar 21, 2009, I pressed ‘tweet’ on my first Twitter utterance, which was not so different from Dorsey’s first, although it lacked his confidence. Mine said: “I have set up a Twitter account and I don’t know why”.