The next speaker in this AoIR 2017 session is Marco Bastos, whose focus is on the Brexit referendum. He notes that a substantial number of bots were active in the Brexit debate on Twitter, yet many of these accounts disappeared immediately after the referendum. But it is also important to distinguish between different bots: there are legitimate bot developers that offer such accounts, while genuine, highly active users are sometimes also misidentified as bots.

Many bots in the referendum have disappeared, then, as have many of the URLs they shared at the time; these can now no longer be …

The next speaker in this AoIR 2017 is my DMRC colleague Brenda Moon, whose focus is on reply chains on Twitter. There are a number of ways in which replies are chained together, and in fact the term 'reply tree' may be preferable to 'reply chains': there may be many replies to the same original tweet only, or a long dyadic interaction over a series of tweets, or various permutations between these two extremes.

Brenda's work uses the TrISMA dataset of all tweets sent by Australian accounts over several years; this may miss tweets in a reply tree if …

The second paper in this AoIR 2017 session is by Daniela van Geenen and Mirko Schäfer, whose focus is on 'fake news' on Twitter. They began by tracking activities in the Dutch Twittersphere, and identified a number of communities within this userbase; within these communities, news and other information are being shared, and a process of social filtering takes place.

Within a two-week sample of Dutch tweets, the project identified the references to traditional and alternative media sources; the former represented established media including broadcasters, newspapers, and similar outlets, while the latter were often online-only, topic-focussed sites that were …

The next presenter at Future of Journalism 2017 is Anja Bechmann, who shifts our focus to news engagement within the private and semi-private spaces of Facebook. Here, the Facebook newsfeed serves at least in part also as a news platform, where news stories are shared and curated in a collaborative fashion. News, here, is variously a journalistically, user-, and algorithmically defined concept.

The investigation of the newsfeed can also help to detect 'filter bubbles', defined as non-overlapping content segments. Key questions here address source diversity, content diversity, and exposure diversity, as experienced by Facebook users; this can be addressed …

I'm the next presenter in this Future of Journalism 2017 session, and my presentation is below. A full paper is also available here.

Echo Chamber? What Echo Chamber? Reviewing the Evidence from Axel Bruns