Vine is Twitter’s new social video sharing service, available as an app for iPhone and iPod touch on the App Store. Twitter is working to bring the app to other platforms. Vine is a mobile service that lets you create and share short looping videos. Videos you post on Vine appear on your profile and are shared with your followers. You can also share them instantly to Twitter or Facebook. Videos can only be 6 seconds long, in a similar concept to Twitter’s 140 character limit on posts. My opinion? 6 seconds is too restrictive, they will probably need to change the concept to make it successful.