What happens if you where to redirect say from a pr3 directory to a pr1 directory? Do you get pr weight credit from the pr3 page or the pr1 page? So in the coop ad site setup you would have inputted the pr3 directory. I am not doing this but was curious if this is a "loop-hole".
A redirect is considered the same page as far as Google is concerned. I'm not sure off the top of my head how the validator reacts, but it's pointless because the next PR update they will be the same anyway.