I am following the group "visual culture", and even if I didn't have access to the papers originally, I get a very good idea about the quality and issues of the papers presented here. This conference has always used a lot of time on each paper, and also a lot of resources, as each paper has its own opponent. The writer gets 10 minutes to introduce the paper, then the opponent has 10 minutes to present his/her views, and then it's 10 minutes for free discussion.
I love the way this group takes the job of opposing the papers very seriously, something which leads to a very high quality in the arguments. I think this is my favourite conference form. It makes for very stable groups and not much cross-visiting between tracks, but at the same time each person presenting papers get good peer feedback. This way presenting a paper here isn't a way to get more publications, but it's a step towards publishing in other media, books or journals, as the papers get a thorough peer-reviewing during the conference.