Number of US Twitter users quadruple since 2010 - study
The number of consumers in the US who use Twitter on a daily basis has quadrupled since late 2010, with 8pc of the online adult population using the microblogging site on a typical day, a study suggests.
The number of adults who use the site on a day-to-day basis has also doubled since May 2011, which suggests the increase may be because of the more widespread use of smartphones.
The US study also reveals young adults prefer Twitter more so than older adults. More than a quarter of people ages 18-29 use Twitter and 31pc of US consumers ages 18-24 compared to 14pc of users ages 30-49.
In March 2012, active Twitter users numbered 140m, up from 100m in September 2011, a statement from the company said.
A spokesperson added that growth is extremely strong and more than 1bn tweets are posted every three days.
Twitter user growth is also increasing in the UK. In May, the number of Twitter users in Britain reached 10m, and according to Twitter, 8m users from the UK accessed the site in just 30 days.
The study, carried out by Princeton Survey Research Associates International for the Pew Internet and American Life Project, involved more than 2,000 adults ages 18 and older.