According to The Next Web, then the users are browsing their stream or a user's profile, they will notice a new 'Similar Vines' button below each post. When they select them, it brings up Vines from other users that the service thinks they will like.

Vine says the feature is part of a new recommendation engine it is been working on.

The company says in a blog post, that as the user and their fellow Vine viewers watch and interact with Vines, that activity helps us determine which posts to show. Now they will always have a new feed of Vines to watch.

(source: ANI)