Online Collaboration Tools for LITA Camp

I'd like to hear people's thoughts on good ways to collaborate/share content/archive the results of LITACamp. For example, we have some Twitter tags listed on the Wiki (http://litacamp.pbwiki.com/More+Info), but I'm also wondering about setting up some chat rooms, online whiteboards, etc. that would help with collaboration and tracking output of different sessions for presentation to the group as a whole.

Infocamp Seattle, for example, used a UStream channel, people put things up on slideshare, etc. It would be great to have a bunch of relevant tools set up (such as they need setting up) before hand to help sessions run smoothly.

-David