Jack Dorsey, one of the co-founders, has been named the new CEO of Twitter. He has been working as an interim CEO for the last four months and just now officially got the permanent title. Twitter has been struggling with its relatively small 316 million monthly active users (small compared to Facebook's 1.5 billion and Instagram's 400 million). Jack Dorsey is focusing on making Twitter easier to use in order to push it ahead of competitors. They also wish to improve advertising through their platform.