Professor Dan Lieberman (who is responsible for the research on the cover of Nature) has a new barefoot running website. It's totally awesome -- check it out.
- Videos of heel-striking vs. front foot striking
- Barefoot running history
- Running tips
It's a really top notch resource: http://barefootrunning.fas.harvard.edu/
Also, I was in touch with Professor Lieberman last year, and they are working on a study design for runners would like to participate -- recording miles, how often barefoot/minimal shoe, and injuries. We'll keep you posted!