This study extends the privacy calculus by a social perspective building on interpersonal communication theory along with the act of perspective-taking in the Social Networking Sites context. Based on a two-step study, we provide evidence for the presence of perspective-taking in self-disclosure decisions using a qualitative approach and empirically test the influence of anticipated perceptions for others on subsequent self-disclosure decisions among 231 Facebook users. Our results show that SNS users are less egoistic as typically assumed by the privacy calculus model guided by an intrapersonal tradeoff between own benefits and concerns. Users are tensed between their pleasure of self-enhancement and others' anticipated perception caused by their own behavior. However, although users think about the relevance of their message for others, their concern about others' negative affect is self-focused as it does not directly relate to self-disclosure intent. It is mediated by a fear of being negatively evaluated by others.