Does anyone have any experiences with the partnership that exists between E-Trade and Northwest? I'm considering transferring my stocks into an online company, but was wondering what the best FF/investment plan was.

http://www.nwa.com/freqfly/earn/credi.shtml#etrade

I'm preferential to NW (they're the only airline that flies here), but hopefully the Air Force will move me soon so that I can have access to other airlines.

Many thanks in advance.