I have been working for a few months now on migrating Mozilla's Etherpad install from the original Etherpad to Etherpad Lite. I got a chance to work with a fair amount of people from the excellent Etherpad community while working on things like adding "Team Site" support to Etherpad Lite, and met even more amazing people recently during the 2013 Etherpad meetup.
Videos have just been posted on Air Mozilla:
If you are at all interested in:
- original Etherpad (!)
- Etherpad Lite
- upcoming node.js features
- operational transformation
- real-time multi-user wiki(pedia) editing (WYSIWYWIKI?)
- hosted etherpad solutions
- other cool stuff
Then definitely check these out!