Interesting NY Magazine article may be relevant by: Jenny (UK)
I've been looking at "how to walk" websites and have found:
http://nymag.com/health/features/46213/
This concerns how our feet were made to "feel" the ground, and how to use them. I've found it interesting, particularly as I find my feet are beginning to dictate a different way of walking to me. This site has made me think.