5 years ago today, @jack (Jack Dorsey) sent the first tweet:
The Twitter blog also highlight this early tweet that saw Jack Dorsey inviting co-workers:
Both tweets are still live here and here.
Since then Twitter has grown immeasurably, with around 140 million tweets per day now being posted - with a record of 6939 tweets per second being sent at 4 seconds after midnight in Japan on New Year's Day 2011.
Happy Birthday Twitter!
(follow me on Twitter @nickburcher)
Hat tip: Twitter blog here
Twitter demographics and statistics vs Facebook demographics and statistics