Twitter's CEO may have teased the company's own hosted video service in a tweet this morning.
As Twitter has aimed to take more control over the services its users rely on, it has consolidated access to photo-sharing, restricted third-party clients, and clamped down on developers. It has also made acquisitions aimed at bolstering its own offerings. Among them have been those that have led to Twitter's official search tool, its purchase of TweetDeck, and others.
One recent acquisition, according to AllthingsD, was Vine, a video clip service that never launched.