I received in the mail today a promo for my existing Continental OnePass Plus card. It provides 2 miles for every $1 spent above $500 each month on all purchases. It lasts through November 30. This is pretty great because if you factor in the 10k bonus that you get for meeting $25k of annual spend, you are getting 2.4 miles per $1 of spend over $500. I remember I was targeted for the 2x miles on retail spend earlier this year mentioned here. I moved my spending to to take advantage of it. When that ended, I was included in the targeted group for the 1.5 miles per $1 promo mentioned here. I boosted my spending for that, too. It seems like Chase monitors how easily your spending is modified by their various promos and perhaps it affects your inclusion in future targeted promos. It seems like they're experimenting with a bunch of different earn rates.