Video footage from last week's 140 Character Conference is now online, so you can watch the panel where Macmillan's digital marketing team, Ryan Chapman and Ami Greko, teamed up with publishing ronin Richard Nash to discuss the impact of Twitter on the book industry—with some unexpected conclusions, such as: "Twitter won't save publishing; publishing will save Twitter."

You can also watch a discussion from earlier that day, where senior editor Ron Hogan spoke about the viability of Publishing As We Know It Today with novelist/memoirist Kaylie Jones and HarperStudio associate publisher Debbie Stier. We've also picked out a few more videos people interested in publishing and books might find illuminating...

(And let's not forget panel moderators Russ Marshalek and Kevin Heisler!)

Chris Brogan and Julien Smith, co-authors of the forthcoming Trust Agents (Wiley), have totally gotten into a speaking groove, bouncing ideas off one another in a conversational mode...

Gary Vaynerchuk also has a book coming out this fall: Crush It!, the first in a ten-book deal with HarperStudio. As always, he was able to get the crowd pumped.

Then there's Tim O'Reilly, the head of O'Reilly Media, on what Twitter has taught him about creating more value than you capture online.

Finally, Rajesh Setty explains how he overcame his own skepticism about Twitter, and now believes people can use it to write books full of "bite-sized chunks" of information, like his ThinkTweet, which has already beat Twitter Wit to market: