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1 Introduction: The Rise of a New Media ParadigmDevan Rosen2 Social Media as Social InfrastructuresSarah Myers West3 Contemporary Social Capital: Relationships vs AwarenessMichael A. Stefanone & Jessica Covert4 Don't be Antisocial: The Politics of the 'Anti-social' in 'Social' MediaElinor Carmi5 Social Media, Alienation, and the Public SphereChristian Fuchs6 Social Media Content Moderation: The Best-Kept Secret in TechYsabel Gerrard7 Make it Trend! Setting Right Wing Media Agendas Using Twitter HashtagsGabrielle Lim, Alexei Abrahams, and Joan Donovan 8 Misinformation and Digital Ethics in Social MediaMelissa Zimdars9 Locating Social Media in Black Digital StudiesFrancesca Sobande 10 An Overview of Social Media and Mental HealthSarah Coyne, Emily Schvaneveldt, and Jane Shawcroft 11 Child and Adolescent Social Media use and Mental Health: A Personal Social Media use Framework Drew P. Cingel, Michael C. Carter, and Lauren B. Taylor12 There is No Easy Answer: How the Interaction of Content, Situation, and Person Shapesthe Effect of Social Media use on Well-beingPhilipp K. Masur, Jolanda Veldhuis, and Nadia Bij de Vaate13 What Does God Need With a Starship?: A Conversation about Politics, Participation, and Social MediaNico Carpentier & Henry Jenkins14 Conclusions: Together We Ascend Devan Rosen

The current study investigates engagement activities in an online resource exchange community exploring elements such as sense of belonging, connectedness, and trust. CouchSurfing.com is an online cultural exchange community in which members from around the globe coordinate travel accommodations and organize gatherings with fellow members via a social media platform. Findings confirmed that members who have not met face-to-face with other members have a lower sense of belonging to the community than those who have. Increased attendance to gatherings was positively related to sense of belonging to the community, and hosting had a positive relationship with trust in the community. Additionally, CouchSurfers reported that they preferred to be contacted through personal e-mails rather then group e-mails, while those who reported an increased participation in gatherings found group e-mails to be useful.

The science of social network analysis has co-evolved with the development of online environments and computer-mediated communication. Unique and precise data available from computer and information systems have allowed network scientists to explore novel social phenomena and develop new methods. Additionally, advances in the structural analysis and visualization of computer-mediated social networks have informed developers and shaped the design of social media tools. This article reviews some examples of research that highlight the ways that social network analysis has evolved with online data. Examples include the international hyperlink network, political blogs and hyperlinks, social media, and multi-user virtual environments. The data available from online environments makes several important contributions to network science, including reliable network flow data, unique forms of relational data across a myriad of contexts, and dynamic data allowing for longitudinal analysis and the animation of social networks.