V. Social Media

 is a computer-facilitated tool that allows an individual, groups, and companies to create, share and exchange information, to develop a career interests and ideas, to share pictures/videos and even feeling/emotion in virtual world and networks. Some common features of social media are:

•  social media are Web 2.0 Internet-based applications
• user-generated content (UGC) such as text, digital photo or digital video posts are the lifeblood of the social media organism
• users create their own profiles for the website or app, which is designed and maintained by the social media organization
• social media facilitate the development of online social networks by connecting a user's profile with those of other individuals and/or groups.

There are many effects that stem from Internet usage. According to Nielsen, Internet users continue to spend more time with social media sites than any other type of site. At the same time, the total time spent on social media in the U.S. across PC and mobile devices increased by 99 percent to 121 billion minutes in July 2012 compared to 66 billion minutes in July 2011. For content contributors, the benefits of participating in social media have gone beyond simply social sharing to building reputation and bringing in career opportunities and monetary income, as discussed in Tang, Gu, and Whinston (2012).