An empirical analysis of users’ privacy disclosure behaviors on social network sites
Introduction
Social media are a group of Internet and mobile based applications build on Web 2.0 technologies in which people can create, share, or exchange user-generated content. Currently, social media is becoming increasingly important in our daily life and has received substantial scholarly attention [46]. Social media outlets rely on the Internet and mobile technologies to provide interactive platforms for information dissemination, content generation, and interactive communications [65]. An array of Internet and mobile-based applications define the way social media functions. Examples include weblogs, microblogs, online forums, wikis, podcasts, life streams, social bookmarks, web communities, social networking, and avatar-based virtual reality [2], [18], [69]. Based on these applications, social network sites (SNS) have gained tremendous momentum, revolutionizing the way individuals build and maintain interpersonal relationships [1], [70].
Because people are increasingly incorporating SNS as a part of their routine social activities, the number of SNS users has grown exponentially in recent years. Every minute, terabytes of user-generated content are posted by millions of users on various social network sites, such as LinkedIn, Facebook, Twitter, QQ, etc. In this way, SNS, underpinned by social media, become versatile resources for both industry stakeholders and scholars to study the enriched and dynamic data contributed by a wide range of users in the social network sphere [34].
In the past decade, research has focused largely on the adoption and usage of SNS [33], [71], as well as the management of social relationships on SNS [17]. Limited work has covered the topic of privacy disclosure. In fact, privacy disclosure on SNS is becoming one of the most important and active research issues in the information systems arena [25], as the influx of user-generated content into various SNS has resulted in major concerns over the misuse of these data. Meanwhile, the Web 2.0 era demands data openness for all kinds of innovative online businesses, and as a result, increasing privacy information disclosure. Openness would essentially help to reduce the uncertainty of interactions, legitimate access to a person in an online group, and ultimately promote online business [39], [62].
Personal information exchange between users on social network sites allows these people to maintain relationships with friends, develop new friendships, and find support and information [62]. Privacy disclosure on SNS has a negative side, however; greater disclosure may correspond also to information theft, trafficking, and privacy invasion. Gross and Acquisti [21] found that users effectively place themselves at a greater risk for cyber and physical stalking, identity theft, and surveillance when they disclose personal information on SNS. As such, concern over the negative effects of privacy disclosure has a major influence in users’ adoption and routine use of SNS [71]. Therefore, this paper is intended to examine the predictability of privacy disclosure behaviors on SNS in terms of the privacy sensitivity levels of information to be disclosed (in short, we will use “sensitivity levels of information” implying the context of privacy). We will investigate the differences between users’ disclosure of highly sensitive information and less sensitive information in relation to SNS structure and mechanisms. These are particularly important questions for SNS industry service providers; hence providing insight into this theme can prove useful in practical applications such as interface design and SNS privacy policy.
Our study contributes to the literature by focusing on predictors of SNS privacy disclosure. Communication Privacy Management theory is introduced as a framework to clarify the influence of users’ gender, age, social network site experience, personal social network size, and blogging productivity on their privacy disclosure behaviors. Specifically, privacy disclosure is divided into two dimensions: breadth and depth. Highly sensitive disclosure and less sensitive disclosure are also distinguished in the study. To test these models, we collected practical data from one of the most popular social network sites. The results clarified various predictors of SNS privacy disclosure and offered insights into the social implications of SNS.
The remainder of this paper is structured as follows. Related literature about privacy disclosure on social network sites is reviewed to provide the theoretical background and foundation for our study in Section 2. We describe the research methodology of this paper in Section 3, including data, variables, and models. Empirical results are presented in Section 4. Finally, we conclude the paper and suggest future research directions.
Section snippets
Privacy disclosure on social network sites
Information privacy has been considered one of the most important “ethical issues of the information age” [38], [56], [57]. As a philosophical, psychological, sociological, and legal concept, it has been studied extensively across multiple disciplines in the social sciences [58]. Generally, information privacy refers to an individual's control over the release of personal information [7], [8], including its collection, unauthorized use, improper access, and errors [57]. Researchers from various
Data
The data used in this paper was collected in September 2013 from http://www.renren.com, the largest and most popular social network site in China, operated by Renren Inc. The dataset contains 1216 users’ gender, age, account rating, number of friends, and number of posted blogs, as most of these variables have been directly or indirectly associated with the use of social network sites in the existing literature [9], [34]. There are slightly more females (50.9%) than males (49.1%) among subjects
Basic model
All three groups of GLM models are implemented and run with SAS version 9.1. Table 3 lists the coefficients of Models 1–4. The coefficient of Gender in Model 1 is negatively significant, indicating that male users have 18.1% lower Disclosing Breadth than female users. Similarly, the coefficient of Age in Model 1 indicates that an increase in the user age by 1 year is associated with a decrease of 4.3% in Disclosing Breadth. These results imply that female and younger users are associated with
Discussion
Previous studies suggest that female users are more likely to disclose personal information [22], [34]. This hypothesis has been reexamined in this study. In greater detail, our results indicate that female users not only disclose privacy information more frequently but also do so with more sensitive information than do male users. In traditional interpersonal and face-to-face contexts, women tend to self-disclose more than men to achieve greater intimacy in relationships [4], [50]. This rule
Implications for theory and practice
From a theoretical perspective, the findings of this study have a number of implications for researchers.
First, a number of core criteria in CPM theory which were tested in previous research [15] in traditional face-to-face communication contexts have been reexamined in this study. Our results, consistent with previous findings, indicate gender differences and age have a strong linkage with privacy disclosure patterns in the SNS context. Furthermore, new criteria in the SNS context such as
Conclusion
Because social media sites are characterized by vast volumes of user-generated content, navigating this content is a significant research challenge [2]. In this paper, we examine the different impacts of demographics, social network site experience, personal social network size, and blogging productivity on users’ privacy disclosure patterns on social networking sites. Two dimensions of privacy disclosure scope, breadth and depth, are defined in the study. From the perspective of information
Acknowledgements
The authors are very grateful to the associate editor, guest editor and two anonymous reviewers for their constructive advice. This study is partially supported by the National Science Foundation of China (71302017).
Kai Li is an associate professor in Business School, Nankai University, China. His research interests include electronic commerce, mobile commerce, and business intelligence. He has published papers in journals including Decision Support Systems, PLOS ONE, International Journal of Mobile Communications, Information Systems and E-business Management, International Journal of Electronic Business.
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Kai Li is an associate professor in Business School, Nankai University, China. His research interests include electronic commerce, mobile commerce, and business intelligence. He has published papers in journals including Decision Support Systems, PLOS ONE, International Journal of Mobile Communications, Information Systems and E-business Management, International Journal of Electronic Business.
Zhangxi Lin is an associate professor in center for Advanced Analytics and Business Intelligence, Texas Tech University, USA. His research interests include electronic commerce, mobile commerce, and business intelligence. He has published papers in journals including Information Systems Research, Decision Support Systems, Information Science and so on.
Xiaowen Wang is an associate professor in School of Economics, Nankai University. Her research interests include electronic commerce, entrepreneurship, strategy management.