I read this a few days ago, and like LisaP, am fascinated by this subject. I went on a real tangent from it reading the Ceit Flanders blog and some of the stuff she linked to as well. Some of which I loved (including some links to people on the limits of mininalism)
I read the NYT articles and listened to some of the interview, although didn't have the patience to go through to the end.
I like the aspect of not spending time on shopping. Apart from my time here on YLF, I don't spend much time shopping either, as I find it tiring.
I always wonder how well placed someone is to do this challenge in the first place. Could I go without clothes for a year easily? - well yes, but I'd be looking shabby. Since I restrict myself anyway with a small budget and a limited number (12-20 items a year) much longer than that and I'd have completely worn out some items like shoes).
Another thought - in my household we run out of shampoo and conditioner probably every fortnight!! (we have 3 daughters with long hair)
Gosh, I'm sounding so banal and not able to communicate all the thoughts that came to me on this topic since you started the thread. I should just go and get on with the organizy tasks I've set myself for the last week of hols.