Why would anyone want to run barefoot? Supposedly, running in too-cushiony shoes weakens parts of the foot overtime, leaving one susceptible to injuries. Plus, I'm sure not having an extra few ounces weighing runners down is appealing enough.
I wonder if those barefoot marathon runners with blackened soles and I'm sure the calluses of a rhinocerous would ever consider these. For about $70 (less than the cost of most high-end running shoes), they'd never have to worry about glass (maybe), sticks, rocks, or animal deposits ever again!