YouTube has quickly become a dominant factor in search rankings and online presence. The video library has now developed, not only into social media, but also as a search engine of its own. For years now, YouTube has been the second largest search engine besides Google. Considering Google and YouTube are partners, there is even more value in a solid YouTube presence.
Content is still the most important part of using this site (hence #1 on the list), but there are also many important ways to optimize a YouTube video with SEO strategies in mind.