MJW, thanks for the info about the elite status upgrades. Guess I won't keep watching to see if I've been upgraded. I don't have any problem using a Silver Elite upgrade certificate but I can't use it until I have a first class seat! (Tomorrow night, as the clock approaches midnight, my fingers will be on the phone buttons...)
BTW, congratulations on the OMNI award. Northwest might be interested in how much we all appreciate excellence in customer service as you've been providing!