Twitter hits 10 billionth tweet
More than 10 billion messages have been sent through Twitter since the microblogging service launched in 2006
The milestone, which was reached last night, underlines Twitter's meteoric growth and increasing popular appeal. In November 2008, it broke the billion tweets mark, and reached five billion tweets last November.
However, Twitter users have been unable to identify who sent the 10 billionth tweet, as it came from someone with a "protected" profile, meaning their messages cannot be viewed by the general public.
News that the milestone had been reached came from Gigatweet, the site that keeps a real-time record of all the Twitter messages sent.
It is estimated that if Twitter continues growing at its current rate, the 20 billionth tweet will be sent some time in July.
Twitter recently revealed that users are sending around 600 tweets every second, which equates to more than 50 million tweets per day. One in five tweets now includes a reference to a product, brand or service.
Despite its rapid growth, Twitter still falls far behind activity on rival social sites. Facebook users spend eight billion minutes on the site per day, while YouTube serves up a million videos per day.