Social media also influences people's buying behaviours.
Digital Influence Group reported that 91% of the people say consumer reviews are the #1 aid to buying decisions and 87% trust a friend's recommendation over critic's review.
In 2010, after the earthquake happened in Haiti, many of the official communication lines were down.
The rest of the world was not able to grasp the full picture of the situation there.
They encouraged citizens to share their voices, hold discussion parties in houses and run their own campaign meetings.
It truly changed the delivery of political message.
It is like any other media such as newspaper, radio and television but it is far more than just about sharing information and ideas.
Social networking tools like Twitter, Facebook, Flickr and Blogs have facilitated creation and exchange of ideas so quickly and widely than the conventional media.
Although we get to know more people, we are not able to build strong bond with all the people whom we met as our available time is limited.
Hence, there is an upcoming social trend of people with wider social circles, but weaker ties (people we don't know very well but who provide us with useful information and ideas).