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The opening essay aims to introduce the subject and the interpretative perspective of the monograph. It is divided into three parts: the first illustrates the evolution of the concept of sharing economy and the main analytical implications; in the second part, the main results of a systematic review of the literature on sharing economy are illustrated; finally, the third part places the contributions of this monograph in the context of other studies and summarizes the main content.

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a b s t r a c tSocial media-based screening is a well-known practice to both recruiters and job seekers. Little is known, however, about how job seekers present themselves on social media, i.e. 'self-disclosure', for employment purposes. This study builds on the theories of hyperpersonal computer-mediated communication, self-efficacy and social exchange to examine job seekers' professional online image concerns, social media self-efficacy, and perceptions of social media effectiveness in the job search as predictors of inappropriate and career-oriented self-disclosures on these media. Findings from a sample of 3374 Italian respondents showed that career-oriented self-disclosure was predicted by all three factors, whereas inappropriate self-disclosure was only predicted by social media self-efficacy. Furthermore, the relationship between professional online image concerns and inappropriate self-disclosure was moderated by age, education and work experience, but not by gender. Theoretical and practical implications are discussed, and directions for future research are suggested.