Does anyone know about how healthy your feet will become after using Nike Free Trainer's. I've sported them to work on occasion and found them to be supple and a welcome break from rigid running shoes.

I'm chicken enough not to run in them however - I'm worried that they don't provide the needed cushioning.

Those are the ones on the above right. I bought them like so many impulse buys - meaning well enough to warrant expenditure but then using them as carpet slippers due to their comfort. I like the look of them. They own cosmetic credibility due to their prescence coupled with an ipod nano on the Nike Ipod crossover deal but they are also rare and rarely used by serious runners.