http://mashable.com/2013/01/24/hands-on-with-vine/
Twitter launched Vine on Thursday — an app that lets you share 6-second video clips.
Currently iOS-only, the stop-motion videos can include as many scenes as you can fit in. Video stops and starts when you press on your device’s screen. Your finished product can then be shared just on Vine, or with friends on Twitter or — in theory — Facebook.
Still in its infancy, the service isn’t without drawbacks. Sharing for instance can only be done when the video is initially uploaded. So if you forget to select that Twitter button when you upload your followers will be out of luck forever.
Thursday at least, uploading those videos to social networks also takes a bit of time. Some of our videos went up immediately, while others took close to an hour.