Whoops. I digress, having forgotten to even touch on my main point. Blah. Let me sum-up:
BN.com was parroting Amazon. Amazon has only seeked to enforce this patent against BN. To wit, they have not in anyway stymied other web-retailers from using One-click shopping. Just Barnes and Noble. I believe Mr. Bezos all-but-promised to not enforce the patent against any others. If memory serves, the only reason he would not all out promise was the fear that, by singling out just Barnes and Noble, the patent would become unenforcable.