Sorry for double post, first posting was in reply to a Review not a Forum post (but I thought it was a forum post–I stumbled upon the link via Google so coming in the side door, I was temporarily confused what I was replying to.)
Andrew Skurka spoke in Minneapolis today at the Outdoor Expo and I took down his notes on foot care and found some links, including this thread.
He recommends shoes that keep your feet cool (he uses the GoLite Trail (Sun Dragon I believe based upon viewing the shoes online just now) Running Shoes that breath well), street hiking (not the heavier duty) biker wool socks (by Defeet), plus the use of Hydropel (sold by BPL), LuekoTape and if a split of the foot skin occurs, Krazy Glue. I found some interesting links:
http://www.backpackinglight.com/cgi-bin/backpackinglight/hydropel.html
http://www.andrewskurka.com/GWL/pictures/13_soco/1.php
http://www.amazon.com/gp/product/B000E5GKK0/ref=pd_luc_00001B0007YT1QIB000E5GKK0
http://vonhof.typepad.com/fixingyourfeet/2007/01/fixing_your_fee.html

