A program that grants points for using Bing search, which users can redeem for gift cards, sweepstakes entries, or charitable donations.
I don't believe they are unavailable to everyone. I am not able to get a Walmart gift card, but my friend that lives a few miles away has the Walmart gift card as an option on their account. So, it IS available in my area and to others, just not to me. It seems like this might be some sort of scam by Microsoft to limit what we can choose.