Buy YouTube Favorites
The popularity of a video is known by how many favorites it has. It has been conducted in a survey that if a video has more than 100 favorites on a particular video it is most likely to be subscribed. It plays a major role in SEO of that video.
Youtube favorites is another important thing that you have to worry about for your videos. Being favorited means that people love your videos and want to save them somewhere so they dont forget them.