I noted this in or die and tutorials. Basically the isbn
tag should take you right to the actual product page. But
since the B&N take over of fatbrain, it appears the
isbn links redirect you to B&N and whatever they're doing
to redirect is foobar'ed and just leaving you at B&N
front door. Check out ISBN 1565922204 which should
take you to Advanced Perl Programming page in B&N's
catalog but doesn't.