List of Articles; List of Figures; List of Tables; List of Abbreviations; Introduction; 1.1 Purpose of the Thesis; 1.2 Structure of the Thesis; Bibliography; Hedonic and Utilitarian Motivations of Social Network Site Usage; Abstract; 2.1 Introduction; 2.2 Background Literature; 2.2.1 Technology Acceptance Model; 2.2.2 The Technology Acceptance Model in SNS Research; 2.3 Discussion of Current SNS Usage Research; 2.3.1 SNSs Are Both Hedonic and Utilitarian Technologies; 2.3.2 Perceived Usefulness Measurement Items Have to Fit SNSs' Contexts; 2.4 Research Model; 2.5 Research Design

2.5.1 Data Collection2.5.2 Measurement; 2.6 Results; 2.6.1 Measurement Model; 2.6.2 Structural Model; 2.7 Conclusions; Bibliography; The Influence of Perceived Belonging on Social Network Site Usage; Abstract; 3.1 Introduction; 3.2 Theoretical Background; 3.2.1 The Technology Acceptance Model and its Use in SNS Research; 3.2.2 Perceived Belonging; 3.3 Research Model; 3.3.1 Basic TAM Relationships; 3.3.2 The Influence of Perceived Belonging ; 3.4 Research Design; 3.4.1 Data Collection; 3.4.2 Measurement; 3.5 Results; 3.5.1 Measurement Model; 3.5.2 Structural Model; 3.6 Conclusions

5.3 Research Model5.4 Empirical Study; 5.4.1 Data Collection; 5.4.2 Measurement; 5.5 Results; 5.5.1 Measurement Model; 5.5.2 Structural Model; 5.6 Conclusions; Bibliography; What Drives Sharing and Receiving Usage in Social Network Sites?; Abstract; 6.1 Introduction; 6.2 Sharing and Receiving Usage; 6.3 Research Model; 6.3.1 Extraversion; 6.3.2 Personal Network Size; 6.3.3 Curiosity ; 6.3.4 Perceived Informational Benefit; 6.4 Research Design; 6.4.1 Data Collection; 6.4.2 Measurement ; 6.5 Results; 6.5.1 Measurement Model ; 6.5.2 Structural Model; 6.6 Conclusions; Bibliography