Social networking

 once upon a time the social media sites not exist, That's time people was aware of over society, That's time some people has use newspaper for the awareness and people has use normal landlines phone. before come  mobile phone  people is writing letter  for your close friend, family member gf etc. and also fit without go to gym  but now people are so lazy and always visit social networks sites but you can't now that social networking is injurious to health. Now we will discuss some numbers. 

Middle East that began in Tunisia in December 2010 that helped force rulers from power in such countries as Tunisia, Egypt and Libya. Thanks to Twitter and other social media, people were able to protest and raise awareness in the face of repression. The revolution continues.

No doubt, the power of social media is exponential. Numbers tell the story. Today there are 1.3 billion active Facebook users, with 82 percent of them coming from outside the U.S. and Canada. Twitter boasts 270 million active users that send 500 million tweets per day. And each day, 4 billion videos are viewed on YouTube (that's 46,296 per second) and 60 million photos are uploaded on Instagram.

The trend has helped these tech disruptors go public at hefty valuations. Facebook, for example, went public in 2012. At the time, it was the biggest in technology and Internet history, with a peak market capitalization of more than $104 million. At press time it had reached a whopping $206.4 billion.