Unexpectedly, it appears I will probably be able to attend DrupalCon DC 2009. So I have been working frantically to get my session proposals in. Here they are;
Last week the Witness Hub was updated with new enhancements and features -- most obviously, the Hub Map is now also on the home page!
Here is a video demonstration:
This feature required asynchronous loading of the Hub Map, including it's full-screen switcher and chunk marker loader code and features, on-load of the 'Map' tab (a Hub-customized version of jQuery tabs).