I made a few tweaks and our humanflows visualization prototypes are now online. There's a bit of information on how humanflows came about, who was involved, and a day-by-day recap of the design process. Once you get to the prototypes section, give the applets a few seconds to load and hopefully you're not disappointed. The interaction is pretty intuitive. All you have to do is click and hold to browse the flow lines and the map. Also, if you can, go full screen on your browser. It looks much better that way (and how it was intended to be shown).