What is Social Media Marketing?

It has become almost a kind of BUZZ WORD, Social media marketing (SMM) but, exactly what is it? It is a form of Internet marketing that uses social networking websites as a kind of marketing tool. The aim of SMM is to provide content that users will share with their social networks to help their company increase customer reach and brand exposure 

The Social Media Examiner, suggests, that 97% of all small businesses use social media as a tool to attract new customers, but 85% of business owners still don't know what social media tools to use. ... If used effectively, social media marketing can lead to many more customers, more traffic, and also an increase in engagement.