Social media refers to interaction among people in which they create, share, and/or exchange information and ideas in virtual communities and networks. Social media differ from traditional/industrial media in many ways, including quality, reach, frequency, usability, immediacy, and permanence.
Global rank:2
Facebook has 1.19 billion monthly active
users..
Facebook
Twitter
Twitter passes 241million monthly active users
Global rank:11
Google Plus
Google Reaches 1 Billion Users Mark +1 Button Is Viewed 5 Million Times A Day