Running barefoot

I was directed by a friend to a very interesting article about running shoes.
The main point is that we actually do not need any fancy shoes when running, and that we are actually more at risk of developing injuries when using them.
The theory behind this is that we run the wrong way (i.e. against Nature's design) and all these extras cushions simply prevent the foot and the leg to sense the terrain and react accordingly.
In response to these facts, Nike actually came up with the Nike Free line.

The article is here.
Make sure you read it all the way to the end, this is where you have all the good studies!