well,
you do certain "activities" which (most of which) would normally earn mileage credit, and they give you points (in addition to the regular mileage credit) called mileathon points. Those points have tiered (or exponential?) values in mileage; 50 points = 10,000 miles, 100 = 25,000 200 = 100,000 (and more in between).
you have till the end of the mileathon to rack up points.
in addition to the mileage credit they also have some sort of contest, but its probably a waste of time.
it turns out that although it seemed to be running through 12/31, you only have till 11/30 to do certain activities, such as open credit cards (and make the first purchase), and they only notified us of this a week into october which is, umm, stupid i think.
and it started bad also, they only showed you your credit (in addition to the extra details) in october - so it really isnt even running 2 months - the main thing i guess is to sell full fare tickets.
so if they allow multiple credit and debit card entries of the same type, it might be ok...
your key accounts offer continental debit cards btw