User Migration in Online Social Networks: A Case Study on Reddit During a Period of Community Unrest

Platforms like Reddit have attracted large and vibrant communities, but the individuals in those communities are free to migrate to other platforms at any time. History has borne this out with the mass migration from Slashdot to Digg. The underlying motivations of individuals who migrate between platforms, and the conditions that favor migration online are not well-understood. We examine Reddit during a period of community unrest affecting millions of users in the summer of 2015, and analyze large-scale changes in user behavior and migration patterns to Reddit-like alternative platforms. Using self-reported statements from user comments, surveys, and a computational analysis of the activity of users with accounts on multiple platforms, we identify the primary motivations driving user migration. While a notable number of Reddit users left for other platforms, we found that an important pull factor that enabled Reddit to retain users was its long tail of niche content. Other platforms may reach critical mass to support popular or “mainstream” topics, but Reddit’s large userbase provides a key advantage in supporting niche topics.

[1]  C. Delbruck,et al.  [The theory of migration]. , 1993, Jahrbucher fur Nationalokonomie und Statistik.

[2]  Fan Zhang,et al.  What's in a name?: an unsupervised approach to link users across communities , 2013, WSDM.

[3]  Claude Castelluccia,et al.  How Unique and Traceable Are Usernames? , 2011, PETS.

[4]  Bruno S. Silvestre,et al.  Social Media? Get Serious! Understanding the Functional Building Blocks of Social Media , 2011 .

[5]  D. Ruths,et al.  Social media for large studies of behavior , 2014, Science.

[6]  Ee-Peng Lim,et al.  Characterizing Silent Users in Social Media Communities , 2015, ICWSM.

[7]  Jon M. Kleinberg,et al.  Group formation in large social networks: membership, growth, and evolution , 2006, KDD '06.

[8]  Pavlin Mavrodiev,et al.  Social resilience in online communities: the autopsy of friendster , 2013, COSN '13.

[9]  Bo Xiao,et al.  A Theoretical Model and Empirical Investigation of Social Networking Site Users' Switching Intention , 2013, PACIS.

[10]  Ching-Chin Chern,et al.  The Post Adoption Switching Of Social Network Service: A Human Migratory Model , 2012, PACIS.

[11]  Kevin Wise,et al.  Moderation, Response Rate, and Message Interactivity: Features of Online Communities and Their Effects on Intent to Participate , 2006, J. Comput. Mediat. Commun..

[12]  Alcides Velasquez,et al.  Motivations to participate in online communities , 2010, CHI.

[13]  Reza Zafarani,et al.  Understanding User Migration Patterns in Social Media , 2011, AAAI.

[14]  Hsi-Peng Lu,et al.  Why people use social networking sites: An empirical study integrating network externalities and motivation theory , 2011, Comput. Hum. Behav..

[15]  Greg Stoddard,et al.  Popularity and Quality in Social News Aggregators: A Study of Reddit and Hacker News , 2015, WWW.

[16]  Michael S. Bernstein,et al.  Quantifying the invisible audience in social networks , 2013, CHI.

[17]  Kelly Bergstrom,et al.  "Don't feed the troll": Shutting down debate about community expectations on Reddit.com , 2011, First Monday.

[18]  Nishanth R. Sastry,et al.  Sharing the Loves: Understanding the How and Why of Online Content Curation , 2013, ICWSM.

[19]  Virgílio A. F. Almeida,et al.  Characterizing user behavior in online social networks , 2009, IMC '09.

[20]  Frauke Hachtmann,et al.  The Process of Social Media Migration Among Young Professionals: A Grounded Theory , 2013 .

[21]  Elena Karahanna,et al.  Shackled to the Status Quo: The Inhibiting Effects of Incumbent System Habit, Switching Costs, and Inertia on New System Acceptance , 2012, MIS Q..

[22]  Haiyi Zhu,et al.  Selecting an effective niche: an ecological view of the success of online communities , 2014, CHI.

[23]  Ana Paula Couto da Silva,et al.  Temporal Analysis of Inter-Community User Flows in Online Knowledge-Sharing Networks , 2015 .

[24]  Sanna Malinen,et al.  Understanding user participation in online communities: A systematic literature review of empirical studies , 2015, Comput. Hum. Behav..

[25]  John Riedl,et al.  How oversight improves member-maintained communities , 2005, CHI.

[26]  Aniket Kittur,et al.  The impact of membership overlap on the survival of online communities , 2013, ICIS.

[27]  Matthew K. O. Lee,et al.  Understanding the role of gender in bloggers' switching behavior , 2009, Decis. Support Syst..