Several great book- and publishing-related talks and panels at Jeff Pulver‘s 140 Characters Conference worth watching:
[blip.tv http://blip.tv/play/AYGLoDCYiSs]
Tim O’Reilly on what he’s learned from Twitter
[blip.tv http://blip.tv/play/AYGLmliYiSs]
Newspapers panel
[blip.tv http://blip.tv/play/AYGK12iYiSs]
Twitter as a news gathering tool panel (a second installment is available via the player)
[blip.tv http://blip.tv/play/AYGLmD2YiSs]
Rajesh Setty on Books that Tweet