Social media like Facebook, Twitter, Instagram, G Plus, Tumblr and Blogs have been used widely in business nowadays and it grows day by day especially when customers can purchase the products just by one click. Therefore, this study is designed to briefly review the use of social media on promoting business, based on the analysis of the relevant literature review in this field. The main purpose of this paper is to identify various social media used for promoting business, the relevance of using social media in promoting business and also to find out the factors for customer's attraction towards purchasing online. The method used in this study is by referring to the secondary sources like ejournal, books and also thesis. The information from these secondary sources were searched and analysed based to the objectives and issues of this study. For the overall conclusion, the findings shows that there are a lot of social media used in promoting business like Facebook, Flickr, Groupn, twitter and others. However, the social Facebook has dominated others. Other than that, from this study it shows that the social media is a relevant medium to promote business as the social media very popular among the society around the world. Social media is also able to approach customers with interactive objectives such as conversation, sharing and able to persuade the customers. The findings from this study may help the sellers to plan their business well especially by promoting their products or services using social media.