There’s an incredible offer right now that someone hasn’t thought through the implications of. You can buy American AAdvantage miles at just over 4/10ths of a cent apiece making charitable donations (!!!) and there are other great offers as well. It will not last.

Frequent Miler writes that you can earn ‘an additional’ 5 times the usual American AAdvantage miles through December 27 (or ‘while supplies last’) using SimplyMiles.

Here’s how the offer is described – basically you earn sextuple miles:

As a special holiday bonus, through December 27 or while supplies last, earn an additional 5x American Airlines AAdvantage bonus miles on every offer site-wide. For example, if you earn 100 miles on a purchase of $30 or more, then you will actually earn 100 miles + 500 bonus miles for a total of 600 miles.

SimplyMiles is like an online shopping portal – earn miles for taking advantage of offers – but instead of going through a link that tracks your purchase, you spend money with a Mastercard credit card that you’ve registered with SimplyMiles.

One Mile at a Time highlights some of the big offers through SimplyMiles that should be sextupled with this offer.

• Movie Club normally earns 23 miles per dollar spent. This offer should yield 138 miles per dollar (buying miles at 7/10ths of a cent apiece)

• Conservation International offers 40 miles per dollar donated. This offer should yield 240 miles per dollar (buying miles at 4/10ths of a cent apiece)

Register for these offers before you engage in any transaction!

I would absolutely buy AAdvantage miles at $0.004 apiece. I value them at 1.3 cents. I’ll leave to you to sort through the question of whether the miles rebated are a quid pro quo which reduce the tax deductible value of any donation.

Your donation will be made to Conservation International, with proceeds granted to forest restoration projects fulfilled by both Conservation International and World Resources Institute.

Charities on this platform have been recognized by the IRS as a 501(c)(3) charitable organization. Your donation (less any applicable administrative fees and standard card processing fees) will be paid directly to the charity you select. Mastercard is not serving as a professional fundraiser on behalf of any charity and Mastercard does not charge charities to be listed on this platform. Mastercard is serving as the donation platform provider solely to help facilitate the donation.

Honestly this reminds me of TrackItBack and the 2009 US Airways holiday shopping promotion, only easier.

I have to think this will be ‘corrected’ and end early (‘while supplies last’) or get altered. Check to make sure the offer is exactly as I’ve described at the time you log in. Take screen shots.