The rep had the term wrong (He said 'Nook for PC' when from looking at the current installed app in apps and programs, it's now just titled 'Nook') but factually the link he gave--the one linked on their current apps page and the one I linked to--is the one people should use. It's the supported one, and the only Nook app on the Windows store. I don't see how there's any ambiguity there.

Where there *is* ambiguity is what's going on for Win7 users, and why so many are having trouble with it.