Online web communities often face bans for violating platform policies, encouraging their
migration to alternative platforms. This migration, however, can result in increased toxicity …

Social media has become an outlet for extremists to fundraise and organize. While
governments deliberate on how to regulate, some social media companies have removed …

The overwhelming amount of information and misinformation on social media platforms has
created a new role that these platforms are inclined to take on, that of the Internet custodian …

In this study, we characterize the cross-platform mobilization of YouTube and BitChute
videos on Twitter during the 2020 US Election fraud discussions. Specifically, we extend the …

The entertainment-driven dynamics of social media platforms encourage users to engage
with like-minded individuals and consume content aligned with their beliefs. These …

The incel (involuntary celibate) community is an extremist online community that practices
intense misogyny, racism, and that glorifies–and sometimes practices-violence. Work to …

Increasingly, alternative platforms are playing a key role in the social media ecosystem. Koo,
a microblogging platform based in India, has emerged as a major new social network …

We deal with the problem of localized in-video taxonomic human annotation in the video
content moderation domain, where the goal is to identify video segments that violate …

Decentralization of online social platforms offers a variety of potential benefits, including
divesting of moderator and administrator authority among a wider population, allowing a …

Developed from a graduate course this book examines some of the deep issues that have
become very relevant due to the increasing use of AI in recent times. The book discusses …