‘Content is the king’ is a well established theory among SEO experts. But the scenario is changing rapidly. Now readers prefer to watch and hear instead reading a lot of text matter on the screen that’s the reason YouTube rocks. YouTube does not only engage more visitors to be engaged in the website but also suggest them to express their views (comment) that’s great. Besides it if video has something catching it will be shared on Facebook, twitter and personal blog, one more way to get traffic without SEO.
Moreover you can earn decent money through providing videos of different types to maintain a great list of site followers. Remember it does not take time to be viral like articles for example Justin Bieber (a star born by YouTube) or Dhanush (another example of YouTube stardom).