Twitter has fallen because thousands of users report problems with their news feed on the social media app.
Reports of problems about the app were extracted enormously this afternoon, according to the down detector monitoring website.
At the height of the problems around 3 p.m., more than 1,900 people had contacted the service in the last 24 hours and reported problems with the app.
Figures then started to fall – but they are now increasing again, with the number of reports in the last 24 hours at around 1,700 at 4 p.m.