Barclaycard seems to be running a pretty consistent promotion across many of their proprietary and co-branded credit cards, offering 5 bonus miles/points/whatever per dollar spent for "gas station, restaurant or department, toy or game store purchases" between October 1, 2013 and December 31, 2013. You can earn up to 2,500 bonus miles this way (on up to $500 in purchases).
You must receive an e-mail about the promotion in order to be eligible, because registration for the promotion is through a link in that e-mail. I received the promotional e-mail for my Barclaycard Arrival World MasterCard, which means I'll earn 7 Arrival miles per dollar spent at gas stations – an easy category for manufacturing spend. 3,500 Arrival Miles are worth $38.50 in statement credits against travel purchases, thanks to the 10% rebate on travel redemptions.
Mommy Points reported an identical promotion for her US Airways MasterCard and one of her readers reported it for the NFL Extra Points Visa Signature.
Since these bonus categories don't have anything to do with each other, I hope that this is an effort by BarclayCard to get into the quarterly bonus game and that we'll see more (and more lucrative) promotions like this in the future.