One of the good characteristics of social media is that their fans can easily share their thoughts and complaints across the world about the challenges their country or the world face.
To date, social media could have overthrown many dictatorial governments and have replaced a democratic government instead. For example, they have overthrown the dictatorial governments of Syria and Egypt through the social media.
Over all, the effectiveness of the social media is more than something we think on the people of the world. Today, people of the world increase their awareness capacity and fight against the social, cultural, and political challenges they face through the social media.
However the social media in the world are so young, they could have absorbed millions of people across the world. At last, we can say that social media have really changed the lives of people across the world.