Flickr Photo by Geoffrey and used with permission
David Weinberger gave the wrap up at the end of the day. An outline of what he said is here. He made this point:
But, participatory culture is changing the nature and topology of ours. It's ours in a different way. We can create works with strangers, with anonymous crowds, and in all the other ways we're inventing. This is a very different sense of ours. And it's not just that we can build Wikipedia or Flickr streams. We also get to make these works matter to one another: That we can surface and pass around the video or the prose so that it becomes a shared cultural object also changes the nature of the ours.
He ad libbed this line: "Holy shit, we built this thing to together!" I would have done a remix of this photo with that line as a speech bubble using one of the flickr remix tools, but the best photo of Weinberger in flickr was not licensed with a Creative Commons by license, but all rights reserved. That prevents strangers building something together. I had to go the extra step to email Geoffrey and request permission to republish the photo with attribution. He granted it.
Geoffrey has an excellent collection of photos from the conference here