페이스북과 트위터 등 소셜 네트워크 서비스(Social Network Service: SNS)와 정보기술이 발달함에 따라 다양한 의사 소통과 인적 네트워크의 확장이 폭발적으로 증가하고 있다. SNS의 사용자가 급속하게 증가함에 따라 그 사용자들의 사 용행태에 대한 연구가 매우 필요하며, 실증적 연구를 통하여 검토할 필요성이 제기되고 있다. 본 연구는 SNS 의 이용동기와 결과에 대해 온라인 상에서 자기를 표현하고자 하는 욕구 즉, 온라인정체성 표현욕구를 이론적 관점에서 그 매개적 역할을 살펴보고자 하였다. 이를 위해 SNS를 사용하는 232명의 응답자를 대상으로 SmartPLS 2.0을 이용하여 실증 분석하였다. 분석결과 개인의 혁신성과 사회적 규범은 온라인정체성 표현욕구에 정(+)의 영향을 미 치는 것으로 나타났다. 이를 통해 온라인정체성 표현욕구가 지식공유의 즐거움과 SNS 관여에도 긍정적인 영향을 미치는 것으로 나타났다. 그러나 온라인정체성 표현욕구가 네트워크 형성과 유지에는 유의한 역할을 하지 못하고 있는 것으로 나타났다. 이는 온라인정체성을 표현하는 것 만으로 네트워크를 형성하고 유지하는 것은 어려운 것으로 보인다. 그러나, 온 라인정체성 표현욕구가 네트워크의 형성과 유지에 직접적인 영향을 주지는 못하지만, SNS 관여를 경유해서는 간접적으로 유의한 영향을 미치는 것으로 분석되었다. 따라서, 이상의 내용을 정리해 보면 온라인 상에서 정체성을 표현하고 SNS 에 대한 적극적인 참여로 이어지게 되면 이것이 곧 네트워크 형성과 유지 및 지식공유의 즐거움에 긍정적인 영향을 주어 SNS의 이용과 성과가 높아질 수 있음을 확인할 수 있었다.
In domestic, Social Network Service(SNS) have grown rapidly and increasingly attracting the attention of academic and industry researchers Millions of users are trying to integrated SNS sites into their daily lives and practices. Almost of all sites support to maintain pre-existing social networks and connect unknown strangers depending on shared interests, political views, or enjoyable activities, and other stuffs. There contains diverse racial, sexual, religious, or national people beyond the local and limited geographic regions compared with the previous Internet based social sites. Current SNS site incorporate the creation of contents, dissemination of information & knowledge, and commercial purpose such like Google advertisement using their users. As fast developing digital devices including smartphone, tablet PC, internet based blogging, and photo and video clips, scholars desperately have began to study regarding diverse issues, which are related to contents that people create via network technologies. The first social network site was SixDegrees.com in 1997, which create profiles and surf the friends lists. Second, Ryze.com help people leverage their business networks in 2001, but it failed to achieve mass popularity. Third, a professional site such as LinkedIn focus on business people whom can connect strangers based on shared interests. MySpace differentiated itself by regularly adding features based on user demand that can make personalized pages. Unlike other SNSs, Facebook was designed to support exclusive college networks at first; they use Harvard University`s email address for finding social network. Currently, there is a big trend that people use SNSs as a tool for maintain pre-existing network, creating new people socially, and at the same time, explicitly find some business opportunities using personal and unlimited public networks. Like this, individual consciously express themselves in an online space, so called, self-presentation. The self-presentation and self-disclosure are mainly studying on offline setting in early stages, which individual convey an impression to others that are expressed to own interest to others. Thus, individuals expect to meet other people and are trying to behave self-presentation engaging in opposite partners accordingly. As developing SNSs, individuals are motivated to disclose self-disclosures of open and honest using diverse cues such as verbal and nonverbal and pictorial and video files to their friends as well as passing strangers. Virtual context, self-presentation seems different compared with face-to-face context. In the time and realm of SNSs, social users look for self-impression by posting text messages, pictures, video files. Under the digital environments, people interact to work, shop, learn, entertain, and be played. SNS provides increasingly the kinds of intention and behavior in online. Typically, self-presentation is the intentional and tangible component of identity. At SNS, people try to engage in others via a desired impression, which can maintain through performing coherent and complementary communications including displaying signs, symbols, brands made of digital stuffs (information, interest, pictures, etc.). In marketing area, consumers traditionally show self-present daily as they selct clothes, hairstyles, automobiles, logos, and so on, to impress others in any given context in a shopping mall or opera. So the self-presentation is contextual based on a specific setting, whereas SNS initiates people to self-present including pre-existing and stranger network beyond regional locality. So far, on offline site`s self-presentation would be very different from online site and would produce significant insights into user motives and behaviors in which SNS space, with a variety of digital symbols. Closely related to the concept of self-presentation, self-disclosure is the propensity an individual wish to reveal its personal information to others. SNS enables an individual for more open self-expression in digitally connected world. Thus, in this study we adopted presentation desire of online identity theory to study SNS use behavior. This study analyzes the direct and indirect relationship between the social network service usage and outcomes. The mediator is presentation desire of online identity. The results indicated that individual innovation and social norm had a positive effect on presentation desire of online identity. Moreover, presentation desire of online identity had a positive effect on enjoyment of sharing knowledge and SNS involvement. However, presentation desire of online identity showed insignificant effect toward network convergent. SNS involvement showed a positive effect on both enjoyment of sharing knowledge and network convergent.