Answer: Many people experience a loss of privacy.
Some people have been harassed by cyberbullies.
Another answer: Social Media has brought many advantages. Today, the whole world is connected. But it also has created problems probably never foreseen by its inventors. For instance, loss of privacy. People are sharing so many things through social media that privacy is a thing of the past. These people have lost the fine line of what is personal and what is public. Another example of a negative thing about social media is that many people spend too much time in front of a computer or mobile device, searching the web and connecting in social media sites. They have forgotten the value of real human contact and real friends. Finally, a sad situation is that cyberbullies are harassing people through social media and some people is afraid of connecting through some sites. There have been many cases where the victims are being chased by these cyberbullies.