Knowledge has always seen as one of the key strategic resources that can produce sustained long-term competitive advantage. Knowledge is the ability of people and organizations to understand and act effectively. Having knowledge supports to cope with daily routine works and it can also set up everyone to deal with new situations and utilize when needed. In a growing global economy managing knowledge effectively has become a source of competitive advantage.

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Companies are adopting integrated approaches to identify, manage, share and capitalize on the know-how, experience and intellectual capital of employees. During the past decade, many companies invested heavily in electronic knowledge management (KM) systems hoping to increase their ability to manage the vast array of knowledge hidden within the many nooks and crannies of organizational life. However, experienced users of electronic KM systems now realize that managing knowledge is a much more complicated process.
SOCIAL MEDIA
The rapid development of both technology and the skills and knowledge of social media users means that what makes up ‘social media’ continues to change at a rapid rate, as new websites and online content appear each day. Social media encapsulates digital tools and activities that enable communication and sharing across the net. Social media is used prolifically by all areas of society; business, politics, media, advertising, police and emergency services. It has also become a key tool for provoking thought, dialogue and action around particular social issues. In its terms, ‘social media is user generated content that is shared over the internet via technologies that promote engagement, sharing and collaboration.’ Social media as we know it today can probably be traced back more than two decades. While it was unsophisticated by today’s standards, users could post public messages on sites such as Usenet. Not surprisingly, the advent and availability of high-speed internet access has led to a proliferation of sites and an explosion in their popularity
THE USES OF SOCIAL MEDIA
Social networks are classified based on how people use them. For instance, Social Networking Sites such as MySpace, Facebook are used to share and update message, Microblogs such as Twitter is used for short messages, Wikis are mainly used for educational and informational purposes, Blogs are usually personal or collaborative online publishing diary, while Online Forums are interactive space where participants discuss issues which are posted on a discussion board. People use social media for either hard or soft issues or both. For instance, some people use social media to play online games, while others use it to negotiate, establish, maintain, and participate in political and cultural issues. Therefore, the popularity, availability, and accessibility of social media technologies make their usage in almost every aspect of life. All social networks rely on advanced Information and Communication Technologies (ICTs) that work to build and support technological literacy for people which in turn helps learners to link in an economy and become valuable contributors. Secondly, social media provide critical content literacy which is the ability to effectively use search engines and understand how they “order” information, who or what organizations created or sponsored the information and where the information comes from and its credibility and/or nature
KNOWLEDGE SHARING
Sharing is a common activity for everyone, but knowledge sharing within an organization is a complex and complicated issue. Knowledge sharing is the process by which knowledge of individuals is converted into a form that can be understood and used by other individuals. Knowledge sharing refers to the task to help others with knowledge, and to collaborate with others to solve problems, develop new ideas, or implement processes. The ultimate goal of KS is to distribute the right content to right people at right time. The system therefore must enable us quickly and effectively to find relevant information & expertise and that can aid into decision-making & problem solving. Hence, the tacit knowledge resides in the minds of individuals, in their skills, experiences, value judgments. Individuals are often the most difficult source to document because they feel that sharing what they know will make them expandable or that their knowledge on any given subject is what makes them unique. Another biggest challenge for KS is each time employees leaves their job; they carry what they know with them. If they share tacit knowledge among employees it ensures that pertinent employees knowledge stay around long after the employees leave the company.
THE USE OF SOCIAL MEDIA IN KNOWLEDGE SHARING AMONG COLLEGE STUDENTS
Social media has a variety of broad definitions, such as "collaborative online applications and technologies which enable and encourage participation, conversation, openness, creation and socialization amongst a community of users, web-based tools and practices enabling participation and collaboration based on individuals’ activities. Social media is to make use of the “wisdom of the crowd”. Group of people are better at problem solving, fostering decision making than the individuals alone. New ways of inspiring and exploiting knowledge sharing are forcing organizations to expand their knowledge sharing technologies and practices. The term “Web 2.0” was generated by O’Reilly Media in 2004. It refers to technologies that allow individuals to interactively participate with information and with other individuals, and to build networks based on mutual personal or professional interest. Web 2.0 facilitates social networking therefore is also referred to as the social media. These technologies - blogs (like Blogger), video sharing (like YouTube), presentation sharing (like SlideShare), social networking service (like Facebook, LinkedIn), instant messaging service (like Skype) and groupware (like Google Docs) - foster a more socially connected platform.