User numbers have stalled in the last two years, with critics saying new users find the service baffling and condemning it for failing to crack down on harassment.
Twitter has 328m monthly users, compared to almost 2bn for Facebook. Instagram, the photo sharing app that Twitter once tried to buy before Facebook paid $1bn for it five years ago, announced on Wednesday that it is now more than twice the size of Twitter with more than 700m users.
Nonetheless, the boost to growth is a potential turning point for Twitter. It credited recent changes to its app with the increase, rather than any extra attention it has received due to Mr Trump’s frequent use of the service.




