Sign up for Mastercard Exclusives online. This may have been posted here before, but I just got it, and some may not have seen it. You don't actually need to be a Mastercard holder. Just answer their 8 or so questions and follow it through, then click on where it indicates to get the points.
http://mastercard.m0.net/m/p/mcd/mpt...?src=mypt93txt