Here's the image presented on March 3, now with all its people mapped. View source to study the technique. I've used the default RECTANGLE setting for figures 1 through 4. For figures 5 through 8 I've used the CIRCLE setting. If you look closely you'll see that only their faces--actually 30-pixel circles surrounding their faces--serve as link cues.
The ninth figure--the woman bending in--is mapped using the POLY (polygon) attribute. This wasn't entirely successful. If you click around her face you'll probably engage the link for her neighbor. Clicking on her body works better. A bit more precision with the polygon vertices might have eliminated this problem.
For the tenth figure I went back to a good old rectangle.
