Nowadays, social media is the most popular on the Internet(Twitter, Facebook, YouTube, etc), everyone are sharing their life and experience, interacting with others. It created a word-of-mouth effect on Internet.
The marketers know that it is a perfect place to promote their products and services. thus they developed a series of strategies and apply it to those social media.
Social Media Marketing is relatively low cost compare with traditional media. It helps you to spread the message in a conversational way.
It is interactive and 2 way communication. It is internet or mobile based. It provides a way that the marketer could communicate with potential customers as well as current customers directly. Through this, it make the company "real" to the customer.
In coming week, I will further explain Social Media Marketing by case study of Coca Cola.
Source 1: http://marketing.about.com/od/strategytutorials/a/socialmediamktg.htm
Source 2: http://marketing.about.com/od/internetmarketingstrategy/a/socialmediamrkt.htm