Here's the URL:

http://www.nwa.com/features/bestfare2.html

And here's the kicker in the T&Cs:

Northwest Airlines must be able to verify the lower online published fare at the time of claim and that the lower fare does not exist on nwa.com.

Someone want to explain to me the business process the pax is to follow with that one?!

When NW is working on the queue, and it's been hours (or days) since the claim was filed, how is NW going to verify the online published fare, and the NW published fare?