After a week spent in Brussels and at the 25th anniversary of the Center for Internet Research in Aarhus, I’ve now arrived in Hamburg for the inaugural Search Engines and Society (SEASON) 2025 conference, which begins with a keynote by the great Matthias Spielkamp, the founder of German NGO AlgorithmWatch, who is also a partner in our ARC Centre of Excellence for Automated Decision-Making and Society. His keynote reflects on the past ten years of AlgorithmWatch’s efforts to promote algorithmic accountability.

AlgorithmWatch is a non-profit NGO based in Berlin and Zürich, seeking to ensure that algorithms serve to strengthen …

I’m the second speaker in this session at the workshop of the Bots Building Bridges project in Bielefeld, presenting our work on destructive polarisation and the practice mapping approach as a method to identify its symptoms. Here are the slides, and more information about the practice mapping approach is available in our recent article in Social Media + Society. I’ve also provided an introduction to the approach in this blog post from a few weeks ago.

The second day at the workshop of the Bots Building Bridges project in Bielefeld starts with Dennis Frieß, whose interest is in AI and deliberation. He notes the importance of online publics for deliberation; however, they often do not live up to the ideal norms of deliberation, due to a lack of equality, rationality, and reciprocity as well as problems with incivility.

There have been various attempts to counter this, through law enforcement, moderation, civil society initiatives, and other means; most recently, there is considerable interest in using artificial intelligence to support high-quality, deliberative online discussions.

What problems are there …

It’s a Wednesday in Germany, and I’m in Bielefeld for a workshop of the Bots Building Bridges (3B) project. We start with an overview of the project’s activities to date, with Florian Muhle, Ole Pütz, Rob Ackland, and Matthias Orlikowski. The project focusses on online political discourse, and the dysfunctions in such discourse that are apparent in social media environments. This also addresses the questions of ‘echo chambers’, of polarisation, and of impacts on democratic discourse. Social media are not solely to blame for this: it may also be possible to support productive political discourse through social media, given the …

The final speaker in this session at the Weizenbaum Conference is Marko Skoric, who begins by drawing parallels between the early cable TV and late social media eras: cable TV, in its early days, was similarly social and diverse in its programming.

Social media, though, can also enable the gathering of like-minded groups, as well as the unsocial exclusion of others whose interests do not match our own; but there is also a shift from networked to clustered publics, where members of the same cluster no longer necessarily know or are even aware of each other. These taste-based clusters maximise …