For the US, Twitter posted total revenue of $321 million, an increase of 53 per cent from Q2 2014. International revenue increased 78 per cent year-on-year to $181 million. These Q2 results are the first to be released by the company since the departure of Dick Costolo earlier this month, who held the top position since the company first went public in 2013. He left amid investor pressure over poor user growth.