“Since June there has been an average of more than 1 billion video views on Facebook every day.” Source: Facebook
“Now more than 65% of [Facebook] video views are on mobile.” Source: Facebook
“And with an update [rolled out in Sept.], people will be able to see how many views a video on Facebook has received.” Source: Facebook
How to add a call to action at the end of a Facebook video: http://ow.ly/Cxnqv