Latest figures suggest that Snapchat video viewing figures have tripled over the last six months. Snapchat is catching up with daily views via Facebook (currently eight million).
Snapchat has approximately 100 million active daily users, compared to over one billion on Facebook. It is also a mobile only app. All these figures suggest a much higher level of engagement amongst Snapchat users.
Sources and further reading: Bitterwallet; ITProPortal.