Have you noticed your Facebook feed blowing up with video? Facebook is now claiming more views than YouTube. Partially because YouTube calls a view when you watch most of the video, where Facebook looks at a view more as an impression. When a video shows in your Facebook stream it's counted, even if you don't watch it.
Regardless the importance of Video on Facebook is growing every day. And if you put video up on Facebook, they will show it more than if you link to an outside video on YouTube.