Twitter acquired a little known video hosting service that never managed to launch. Known as Vine, the service hosts video clips that loop. From their site: "The best way to see and share life in motion. Create beautiful looping videos in a fun way, then share with your friends and family."
The site also says that the service is coming soon. Evidence from the tweet shows that the service is already functioning, so could Twitter be planning to integrate the service as their own video hosting service? As of late, Twitter has been restricting access to third-party services so that they could better manage advertising revenue and other features.
It looks as though Vine may be turned into a hosting service for videos embedded in Tweets. It's not clear, if this does happen, whether or not Twitter will restrict users from using other services to embed videos in tweets. Keep your eye on Twitter as they should be doing some interesting stuff in the upcoming months.