I'm not sure there's a way for B&N to revoke titles either. The DRM seems to just be keyed off of Name and Credit Card Number. I may be a minority, but I have several hundred titles that fit with room to spare on one of the later gen Nooks. Now as far as getting an actual file.... Maybe you'll just have to get a first gen Nook. Surely the desktop application stores an epub locally at some point though?
