Twitter makes first quarterly profit in its history

Social media company makes $91m profit in fourth quarter of 2017 on revenue of $732m

Twitter has posted its first quarterly profit in the company's 12-year history, although a clampdown on fake accounts meant it lost users in the US and overall user growth stalled.

The San Francisco-based social network, which went public five years ago, made a profit of $91m (65m) in the fourth quarter of 2017, compared with a $167m loss a year earlier, after cutting costs.