At Nokia World in Abu Dhabi, Stephen Elop mentioned that Vine and Instagram will soon be arriving on the Windows Phone platform. Today, he can chalk one of those out as Vine has landed on Windows Phone.
Vine is an app by Twitter that lets you post short videos. You tap and hold the screen to create short, looping videos with sound and can either use the front or back camera of your device. Unique to Windows Phone is the ability to can pin your Vine account and use Pivots to easily switch between your apps.
Source: Vine Blog