论文标题
来自边缘平台的反社会行为的溢出：社区禁令的意外后果
Spillover of Antisocial Behavior from Fringe Platforms: The Unintended Consequences of Community Banning
论文作者
论文摘要
在线平台面临着使社区保持民间和尊重的压力。因此，从Reddit和Facebook等主流平台上有问题的在线社区的横幅通常会受到热情的公共反应。但是，该策略可以导致用户迁移到具有较低适度标准的替代边缘平台，而反社会行为（例如巨魔和骚扰）被广泛接受。由于这些社区的用户通常在主流和边缘平台之间保持共同活性，因此反社会行为可能会溢出到主流平台上。我们通过分析来自迁移到边缘平台的三个被禁止社区的大约70,000名用户来研究这一可能的溢出：R/The_donald，R/性别批评和R/Incels。使用差异差异设计，我们将共同活性用户与匹配的用户进行了对比，以估计边缘平台参与用户对Reddit的反社会行为的因果效应。我们的结果表明，参与边缘社区会增加用户对Reddit的毒性（按照视角API的衡量），并参与了类似于被禁止社区的子雷数 - 这通常也违反了平台规范。效果会随着时间的流逝和曝光而对边缘平台的暴露加剧。简而言之，我们发现通过共同参与从边缘平台到Reddit的反社会行为溢出的证据。
Online platforms face pressure to keep their communities civil and respectful. Thus, the bannings of problematic online communities from mainstream platforms like Reddit and Facebook are often met with enthusiastic public reactions. However, this policy can lead users to migrate to alternative fringe platforms with lower moderation standards and where antisocial behaviors like trolling and harassment are widely accepted. As users of these communities often remain co-active across mainstream and fringe platforms, antisocial behaviors may spill over onto the mainstream platform. We study this possible spillover by analyzing around 70,000 users from three banned communities that migrated to fringe platforms: r/The_Donald, r/GenderCritical, and r/Incels. Using a difference-in-differences design, we contrast co-active users with matched counterparts to estimate the causal effect of fringe platform participation on users' antisocial behavior on Reddit. Our results show that participating in the fringe communities increases users' toxicity on Reddit (as measured by Perspective API) and involvement with subreddits similar to the banned community -- which often also breach platform norms. The effect intensifies with time and exposure to the fringe platform. In short, we find evidence for a spillover of antisocial behavior from fringe platforms onto Reddit via co-participation.
