In 2015, Reddit closed several subreddits-foremost among them r/fatpeoplehate and
r/CoonTown-due to violations of Reddit's anti-harassment policy. However, the effectiveness …

Norms are central to how online communities are governed. Yet, norms are also emergent,
arise from interaction, and can vary significantly between communities---making them …

In this paper, we introduce a novel sociotechnical moderation system for Reddit called
Crossmod. Through formative interviews with 11 active moderators from 10 different …

Political trolls initiate online discord not only for the lulz (laughs), but also for ideological
reasons, such as promoting their desired political candidates. Political troll groups recently …

Online health communities (OHCs) provide support across conditions; for weight loss, OHCs
offer support to foster positive behavior change. However, weight loss behaviors can also be …

Self-harm is the infliction of pain or injury onto oneself. Though historically these behaviors
were relegated to the fringes of communities, information technology now enables new ways …

With increasing attention to online anti-social behaviors such as personal attacks and
bigotry, it is critical to have an accurate accounting of how widespread anti-social behaviors …

We study changes in social media usage following the 'Great Deplatforming'inthe aftermath
of the 6 January 2021 attack on the US Capitol. Following theattack, several major platforms …

Wikipedia is one of the most successful online communities in history, yet it struggles to
attract and retain women editors-a phenomenon known as the gender gap. We investigate …