I'm going to be away for a couple of weeks, with little to no Internet access most of the time, so I've asked Kim Rees to step in while I'm gone. She's the co-founder of Periscopic, one of my favorite information visualization firms, and she was the technical editor for Visualize This. You're in good hands.
You can follow her at @krees.
Be good, and see you all when I get back.
She's all yours, Kim.