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Micro-blogging is a new social networking service (SNS) that can be viewed as an easily accessible, simplified blog. The simple and swift spread properties of micro-blogging make it different to the conventional SNS. However, little empirical results were provided in prior literature to elaborate individual’s behavior of micro-blogging use. Consequently, this study aims to explore the possible influence of individuals’ motivations on their self-disclosure and instant information sharing behavior as well as the extent of perceived social support in micro-blogging. Individuals who had experiences on Plurk usage were invited as subjects. The partial least squares (PLS) was utilized to examine the proposed model and hypotheses. Analytical results indicate that popularity and interpersonal needs significantly influence individual’s self-disclosure, while interpersonal and entertainment needs significantly influence individual’s instant information sharing behavior. Moreover, both individual’s self-disclosure and instant information sharing behavior have a positive relationship with the perceived extent of social support.

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Despite explosive growth in the number of Facebook users, little research has investigated the use of different Facebook features. Thus, this study explored what motivates people to use various Facebook features as well as the social impact of using the website itself. Users with experience in both social interaction and social game features offered by Facebook were invited to participate in a survey. Our proposed research model was evaluated using the partial least-squares (PLS) method. Results show that social needs, enjoyment needs, and trend-following significantly influence the use of the social interaction features on Facebook, while immersion needs and achievement needs significantly influence the use of social games associated with the website. Interestingly, we found that different clusters of individuals have different sets of motivations. Furthermore, both social interaction features and social game features have positive correlations with social ties.

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Recently, Wikipedia has garnered increasing public attention. However, few studies have examined the intentions of individuals who edit Wikipedia content. Furthermore, previous studies ascribed a 'knowledge sharing' label to Wikipedia content editors. However, in this work, Wikipedia can be viewed as a platform that allows individuals to show their expertise. This study investigates the underlying reasons that drive individuals to edit Wikipedia content. Based on expectation-confirmation theory and expectancy-value theory for achievement motivations, we propose an integrated model that incorporates psychological and contextual perspectives. Wikipedians from the English-language Wikipedia site were invited to survey. Partial least square was applied to test our proposed model. Analytical results indicated and confirmed that subjective task value, commitment, and procedural justice were significant to satisfaction of Wikipedians; and satisfaction significantly influenced continuance intention to edit Wikipedia content.