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PurposeThis paper contrasts the determinants of online disclosures about self and others in social media.Design/methodology/approachData from 216 respondents were collected through an online survey. The formal research model was tested with covariance based structural equation modeling.FindingsThe determinants of online disclosures vary whether the subject is self or others. Social networking site (SNS) users who self-disclose are also more likely to share information about others. Furthermore, there are significant gender effects in the influences of disclosure as revealed by multi-group SEM.Research limitations/implicationsFuture research models should incorporate the construct of disclosure about others and examine the intertwining of different types of disclosure on SNS. Future work should include behavioral measures, as this study relied on self-report measures.Practical implicationsThe current understanding of information sharing does not accommodate different forms of disclosure. Employers or systems administrators concerned about data sharing may need to tailor interventions to the subject of the disclosure. Furthermore, the significant gender differences in determinants of disclosure suggest that this should be considered in practical applications.Originality/valueDisclosure about others has not been examined in prior work. This study contributes by offering empirical data on the contrasting determinants of disclosure as well as gender differences. It improves the understanding of online information sharing, a topic of particular relevance in today's information oriented society.

Increases in routine data collection and surveillance in recent years have resulted in ongoing tension between citizens' privacy concerns, perceived need for government surveillance and acceptance of policies. We address the lack of Australia focussed research through an online survey of 100 Australian residents. Data was analysed using PLS, revealing that privacy concerns around collection influence acceptance of surveillance but do not influence enactment of privacy protections. Conversely, respondents' concerns about secondary use of data were unrelated to their levels of acceptance, yet were a significant determinant of privacy protections. These findings suggest that respondents conflate surveillance with collection of data, and may not consider subsequent secondary use. This highlights the multi-dimensional nature of privacy which must be studied at sufficiently granular level to draw meaningful conclusions. Our research also considers the role of trust in government, and perceived need for surveillance and these findings are discussed with their implications.