Facebook Live is a great tool for promoting an upcoming project, interviewing someone, or just to send a shoutout for the week. The video is available on the site long after the streaming has ended, and the MP4 can be downloaded and then uploaded to YouTube, where you can make it more public and optimize it more. The following story talks about some of the things Facebook is doing to beef up its video options.
http://www.socialmediatoday.com/social-networks/facebook-continues-video-push-adding-new-group-video-app-and-tv-content