The next speaker at ECREA 2012 is Sonia González Molina, whose interest is in the use of social media by the Catalan Road Service, the main source of official road information in Catalunya. She interviewed the responsible communication officers and analysed the organisation's Twitter and YouTube accounts as well as corporate documents.

The next speaker at ECREA 2012 is Frauke Behrendt, whose interest is in the use of mobile media for sharing bike riding information as generated by electrically assisted bikes. Such bikes are now also being introduced into the UK, and Frauke's research in Brighton is interested in using mobile media to monitor the use of such bikes and enable riders to provide feedback. Brighton is a useful test case as the hilly and windy environment means that electrical assistance for pushbikes is especially welcome.

The next session at ECREA 2012 starts with my colleague Tim Highfield, presenting a paper on the Tour de France on Twitter which was co-authored with Stephen Harrington and myself. My notes on the session are below ; slides and audio will follow later. Tim's slides and audio.

The next speaker at ECREA 2012 is Maria Bakardjieva, who begins by noting the legacy of the public sphere concept – it has been enormously influential, especially also on central and eastern European scholars after the fall of the Iron Curtain.

My own paper starts the ICA-flavoured session at ECREA 2012 this afternoon; my presentation built on our research into the uses of Twitter to explore how we might reconceptualise the public sphere. The slides are below; audio will follow. now online, too.

Social Media, Big Data, and the Public Sphere from Axel Bruns

We move on to Stefania Milan as the next presenter at ECREA 2012. Her interests are in the social organisation of protest movements, especially through social media; what is the role of such media in the overall process, both at micro and meso levels? Collective action is a social construct which results for the interactions of social actors; their meaning construction is contextually embedded.

The next speaker in this ECREA 2012 session is Julie Uldam, who shifts our focus to the climate change debate, in the context of the UN climate change conferences. When the conference came to Copenhagen in 2009, it generated a substantial amount of activity by the climate change activists who are based in London, but the same cannot be said for the 2011 conference in Dublin.

The second ECREA 2012 keynote speaker this morning is Clemencia Rodríguez, who will be shifting our focus further towards citizens' media. She notes that it is important to take historical precedents seriously – reacting against the popular representation of recent political unrest as driven and determined by social media, and as leaderless revolutions.

From the excitement of a thoroughly inspiring AoIR 2012 conference, I've now made my way to Istanbul for this year's European Communications Conference, ECREA 2012. We open the conference with a keynote on e-democracy by Donatella dells Porta, considering the types of democracy which new social movements are envisaging.