I think this was the first year they tried to capture things on sound, video or both, so there are occasional sound dropouts, but in general it's tolerable. I think it's great that the conference presentations can be captured this way, and I suspect that it will cause more, rather than less, people to want to come to the conference. A great deal of the conference is much more than the presentations -- the OpenSpaces are a big part of it, and just hanging out and talking to people is something you don't get on the web. On the other hand, even for the people that come to the conference it's nice to know that you can see the presentations you might have missed.

I see that the lighning talks from Thursday were also captured, but it appears that it was only audio so it's hard to tell how much you'll get from these without seeing what the speakers were showing and doing. Lightning talks tended to be one of the most popular events in the conference, since they are 5 minute presentations about something that interests the presenter. For whatever reason, this seems to bring out incredibly interesting topics, and you can never get bored since they are only 5 minutes long.