YouTube has been a HUGE promotion tool for millions of artists and if you're not taking advantage of it, you're definitely missing out.
YouTube is the 3rd biggest website it in the world (behind Google and Facebook) and it has become arguably the #1 way to listen to, discover and share music.
The idea of consumers "owning" music is fading and being replaced by streaming services like Spotify, Pandora and especially YouTube.
Convenience and cost are huge part of that shift, but "shareability" is also a huge factor. When we used to consume music solely through terrestrial radio, TV and physical media like CDs, it was really hard to share that music. Now with the click of a button, you can share it with literally millions of people. What does this mean for you as an artist? Get on YouTube!