Here is the link for the item.
I've been very interested to read this thread as for a while I have thought that it cannot be right for running shoes to 'insulate' us from natural terrain and to attempt to make every footstrike identical to the last. To do so, I am sure, produces the repetitive strain type injuries so common in runners. Paradoxically (to non fell runners), fell running places us at less risk of arthritis of the hips and knees than road running because of the continually varying terrain, footstrike, and load bearing on the larger joints.
http://news.bbc.co.uk/1/hi/sci/tech/8483401.stm