Day two of Web Science 2016 begins with a keynote by Jure Leskovec, whose interest is in antisocial behaviour in social media spaces. He begins by noting that the Web has moved from a document repository or library to a social space, where users contribute content and provide feedback to each other. Platforms for this include the main social media spaces, as well as Reddit, StackOverflow, and the comment sections of news sites.
These two metaphors for the Web – as a library and as a social space – are very different from each other, especially in how users are policed and controlled. In the latter model, one user's experience is a function of other users' experiences, and the question thus becomes how to keep users engaged and promote positive, constructive behaviour – and how to police the small groups of users who disrupt the community and have a disproportionately large effect on all other users' experiences.