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Over the past decade, the rapid evolution of social media has impacted the field of human resource management in numerous ways. In response, scholars and practitioners have sought to begin an investigation of the myriad of ways that social media impacts organizations. To date, research evidence on a range of HR-related topics are just beginning to emerge, but are scattered across a range of diverse literatures. The principal aim of this chapter is to review the current literature on the study of social media in HRM and to integrate these disparate emerging literatures. During our review, we discuss the existent research, describe the theoretical foundations of such work, and summarize key research findings and themes into a coherent social media framework relevant to HRM. Finally, we offer recommendations for future work that can enhance knowledge of social media’s impact in organizations.

This paper investigates the mechanics of multimedia tie maintenance, with a particular emphasis upon social network sites (SNSs) and their uses and gratifications. We present results from a national sample of American adults (N = 571) of all ages, investigating the associations of several attitudinal and social variables with multimedia tie maintenance. We find that Facebook is used to maintain social ties at rates comparable to other media and is increasingly used to connect with close ties, contrary to previous literature. We also uncover highly significant patterns of “expressive” and “instrumental” engagement, isolating distinct expressive/instrumental orientations toward digital media in general and Facebook specifically. Respondents who displayed an expressive pattern of engagement with Facebook did not use non-SNS media to maintain ties any less frequently than those who do not use Facebook expressively. Respondents who displayed an instrumental pattern of engagement with Facebook meanwhile, supplemented their lack of SNS use to maintain ties by using other media more frequently for this purpose. This paper contributes to the literatures of media multiplexity, networked individualism, uses and gratifications theory, and social capital through SNSs. It makes a significant contribution to understanding the psychological and social gratifications of digital media, and their relationship to patterns of multimedia tie maintenance.

Social networking sites (SNS) are enjoying growing popularity and have triggered new ethical issues including risks of deception, social grooming, cyber-bullying and surveillance. This development along with the growing power of SNS providers calls for an investigation of the CSR engagement of SNS companies. The chapter examines to what extent three prominent providers – Google, Facebook and Twitter – fulfill their responsibilities.

The chapter draws heavily on a politicized concept of CSR, namely ‘corporate citizenship’ (Crane, Matten, & Moon, 2008a; Matten & Crane, 2005) and ‘political CSR’ (Scherer & Palazzo, 2007, 2011) and discusses the role SNS providers play in administering citizenship rights. The chapter takes a qualitative case study approach.

Facebook, Twitter and Google have not only made clear commitments to act responsibly, they actually enhance the citizenship status of their users in many ways, e.g. by offering a platform for democracy activists. Deficiencies and contradictions also become visible, e.g. SNS providers inhibit citizenship by failing to provide sufficient privacy protection.

The chapter is limited by its case study approach, but provides valuable insights to an industry with considerable influence. It contributes to CSR research by applying and testing the politicized concept of CSR in the context of SNS providers.

Although SNS have received appraisal as effective tools of CSR communication, there has been little attention to CSR policy and practice of the companies providing social networks. This is unfortunate since the activities of SNS providers directly impact on millions of users worldwide.

Facebook has been identified as a primary source of political information by a majority (63 percent) of its users. The purpose of this paper is to examine the relationship between Facebook use and political participation, and investigate the mediating effects of the characteristics of one’s Facebook network (i.e. network size, proportion of strong ties, and discussion network heterogeneity).

This study relies on a representative survey of American adults (n=1,032) conducted during the 2012 primary election campaigns from May 3 to May 10. The sample was randomly selected from a representative online panel maintained by a professional research organization. Given this study’s focus on the influence of Facebook use and network characteristics, an online panel is suitable for testing the hypotheses.

The results show positive associations between Facebook use and both off- and online political participation. Further, the positive association between Facebook use and political participation is mediated by discussion network heterogeneity and the proportion of strong ties in one’s Facebook network, but not the network size.

This study sheds light on the roles played by network characteristics of Facebook. The composition of a user’s Facebook network is closely related with what kind of information she encounters and how likely she is to participate in politics. Hence, network characteristics (e.g. Facebook discussion network heterogeneity) arise as important for gaining a nuanced understanding of the relationship between general use of the medium and its political outcomes.

Digital cameras and social networking have made photo-taking and photo-sharing more ubiquitous than ever before. In recent years, scholars and the popular press have raised concerns over the practice of posting photographs on social networking sites, especially when the images contain problematic or incriminating content. These concerns are often directed toward college students, who are among the most active users of social media. To that end, this chapter offers a comprehensive overview of the extent and emerging research pertaining to college students' photo-sharing habits on social networking sites. Much of our attention focuses on Facebook, which has emerged as the largest and fastest growing photo-sharing Web site in the world. While research on text-based disclosure will be addressed, a greater emphasis is placed on college students' photo-related behaviors, including uploading, viewing, tagging, and untagging photos. Further, this chapter discusses research on problematic or damaging content in college students' photos posted on Facebook, including depictions of alcohol use, drug use, and sexual promiscuity. This chapter provides a glimpse of some recent data (collected by the author) from a national sample of U.S. college students, which further shed light on their experiences and attitudes regarding their photo-related Facebook behaviors, the types of incriminating photos they report posting, and the consequences they have experienced due to visual images shared by themselves or others on Facebook. Finally, this chapter concludes with a discussion of the strategies utilized by college administrators, faculty, athletic coaches, and others within higher education to address the concerns and consequences often associated with college students and the photographs they share on Facebook and other social networking sites.

The purpose of this paper is to apply cultivation theory to social network sites by investigating how Facebook uses cultivates users' ethnic diversity perceptions and attitudes.

The authors’ investigations include an online and offline survey study with 476 Facebook users and a follow-up experiment with 75 individuals.

The authors provide empirical support that Facebook use cultivates ethnic diversity perceptions and ethnic diversity-related attitudes. They show that Facebook use relates to perceptions of ethnic minorities that resemble the world on Facebook that is characterized by high ethnic diversity. The authors further demonstrate that the cultivation of ethnic diversity-related attitudes is mediated by diversity perceptions related to users' close social environment.

Future research should consider culturally and educationally diverse samples as well as longitudinal research designs to address external validity and causality issues.

Algorithms determining the content users are exposed should be thoughtfully curated to avoid attitudinal and ideological polarization.

Facebook can play an important role in positively shaping intergroup relations, thereby countering negative outgroup attitudes, social anxieties and radical right-wing parties.

The authors’ studies extend the scope of cultivation research by identifying a new media vehicle as a source of cultivation influences and shed light on the cultivation-based process of attitude change on social network sites.

Leveraging social action theory, social network theory and the notion of network externality, the purpose of this paper is to model two different return on investment (ROI) measures: the networked ROI which captures the network effect originating from a social media investment, and the discrete ROI which focuses social media discrete returns from individual users.

A field experiment was set up over a period of three months to test the effects of two variants of an advertisement campaign (a social vs a discrete ad) on the modeled networked and discrete ROIs.

The authors find that emphasizing discrete user actions leads to lower network gains, but higher monetary returns while the social action emphasis produces higher network gains, but lower monetary returns. The study further suggests that social action focus is preferable for brand promotion and engagement, whereas the discrete action focus is suitable for boosting sales and website traffic.

Several potential implications for social media researchers and marketers are also discussed.

The authors for the first time showed that that the social media returns are derived not only from individual actions taken by the user (e.g. likes and shares) but also from users’ social interdependencies and the additional exposure that results from network effects.

The purpose of this paper is to investigate how source, network, relationship, and message/content factors affect how consumers respond to a word‐of‐mouth (WOM) communication in an online social network.

Hypotheses were addressed using two online surveys. The first of these examined persuasive WOM communications on Facebook, the second investigated WOM communication on Twitter.

It was found that closeness to the source of a persuasive communication may have less of an impact on message acceptance in online social networks compared to traditional WOM. The number of persons in a product network, as well as whether those members of a product network are also members of one's friend network, are important factors that determine message acceptance.

The paper demonstrates differences between online versus traditional WOM, and has important implications for marketing practitioners.

The purpose of this paper is to explore the influence of five dimensions of similarity (i.e. condition similarity, context similarity, catalyst similarity, consequence similarity and connection similarity) on Facebook social networks development.

A questionnaire-based survey was conducted with 245 Romanian college students. SmartPLS 3 statistical software for partial least squares structural equation modeling was chosen as the most adequate technique for the assessment of models with both composites and reflective constructs.

More than 52 percent of the variance in social network development was explained by the advanced similarity model. Each dimension had a positive effect on Facebook social networks development, the highest influences being exerted by condition similarity, context similarity and consequence similarity.

The current approach is substantively based on the homophily paradigm in explaining social network development. Future research would benefit from comparing and contrasting complementary theories (e.g. the rational self-interest paradigm, the social exchange or dependency theories) with the current findings. Also, the research is tributary to a convenience-based sample of Romanian college students which limits the generalization of the results to other cultural contexts and, thus, invites further research initiatives to test the model in different settings.

Similarity attributes and mechanisms consistently determine the dynamics of online social networks, a fact which should be investigated in depth in terms of the impact of new technologies among young people.

This study is among the first research initiatives to approach similarity structures and processes within an integrative framework and to conduct the empirical analysis beyond US-centric samples.