Networks, Communities, and Groups -- How Well Do Doodle Polls Do -- Bring on Board New Enthusiasts! A Case Study of Impact of Wikipedia Art + Feminism Editathon Events on Newcomers -- The Social Dynamics of Language Change in Online Networks -- On URL Changes and Handovers in Social Media -- CommentProfiler: Detecting trends and parasitic behaviors in online comments -- On Profiling Bots in Social Media -- A Diffusion Model for Maximizing Influence Spread in Large Networks -- Lightweight Interactions for Reciprocal Cooperation in a Social Network Game -- Continuous Recipe Selection Model based on Cooking History -- Politics, News, and Events -- Examining Community Policing on Twitter: Precinct Use and Community Response -- The Dynamics of Group Risk Perception in the US After Paris Attacks -- Determining the veracity of rumours on Twitter -- PicHunt: Social Media Image Retrieval for Improved Law Enforcement -- TwitterNews+: A Framework for Real Time Event Detection from the Twitter Data Stream -- Uncovering Topic Dynamics of Social Media and News: the Case of Ferguson -- Identifying Partisan Slant in News Articles and Twitter during Political Crises -- Predicting Poll Trends using Twitter and Multivariate Timeseries Classification -- Inferring Population Preferences via Mixtures of Spatial Voting Models -- Contrasting Public Opinion Dynamics and Emotional Response during Crisis -- Social Politics: Agenda Setting and Political Communication on Social Media -- Markets, Crowds, and Consumers -- Preference Aware Successive POI Recommendation With Spatial and Temporal Influence -- User Recommendation in Event based Social Networks -- An Effective Approach to Finding a Context Path in Review Texts Using Pathfinder Scaling -- How to find accessible Free WiFi at Tourist Spots in Japan -- Privacy, Health and Wellbeing -- Mobile Communication Signatures of Unemployment -- Identifying Stereotypes in the Online Perception of Physical Attractiveness -- What Makes A Good Professor? An Analysis of Students'Evaluations across Institutions, Disciplines, and Cultures -- Detecting Coping Style from Twitter -- User Privacy Concerns with Common Data Used in Recommender Systems -- How a user's personality influences content engagement in social media -- Semisupervised knowledge extraction for detection of drugs and their effects -- Using Social Media to Measure Student Wellbeing: A LargeScale Study of Emotional Response in Academic Discourse -- EmojiNet: Building a Machine Readable Sense Inventory for Emoji.

The two-volume set LNCS 10046 and 10047 constitutes the proceedings of the 8th International Conference on Social Informatics, SocInfo 2016, held in Bellevue, WA, USA, in November 2016. The 36 full papers and 39 poster papers presented in this volume were carefully reviewed and selected from 120 submissions. They are organized in topical sections named: networks, communities, and groups; politics, news, and events; markets, crowds, and consumers; and privacy, health, and well-being.