An interesting video (from 2011) for all businesses and marketing departments to watch, it was made to promote the book Socialnomics. The video is basically a slideshow of interesting facts about social media, (this is V2 updated in 2011).
The second video is an updated one from 2016, which also covers increased smartphone usage, the internet and technology.
Points to watch out for in the first video are - the number of years it took for a new technology to gain 50 million users :
DID you know - Even The Royal Family not only have a Website, they have a YouTube Channel, a Flickr account and Twitter.
DID you know - Children are being named "Facebook" : -
As reported by CNN, a man in Egypt has named his baby daughter Facebook in honour of the role the social network played in the recent revolution. Egyptian newspaper Al-Ahram reports that Gamal Ibrahim gave his daughter the name “to express his joy at the achievements made by the youth.”