Twitter updated its video-sharing app, Vine, with features that will allow users to tag friends and shoot selfies. When shooting a new post, users will be able to switch between the front and rear facing camera.
Vine also supports @mentions. Just like on Twitter, to mention on Vine you just type in a user name with an @sign. When you mention a friend in your Vine their profile will be linked within the post.
You can download Vine 1.1 from the App Store here.