AP ImagesTwitter on Wednesday reported its second profitable quarter in a row as its first-quarter 2018 earnings beat Wall Street expectations. Revenue hit $665 million (£477 million) in the first three months of 2018, a 21% increase on the same period last year. Monthly active users averaged 336 million for the quarter, an increase of 3% year-over-year. The company's net income was $61 million, marking its second month of profitability.