The digest page is here: http://www.amazon.com/Fantasy-Science-F
You can either just get the current edition (the button says "buy," and you will get an e-mail duly informing you that $0.00 has been charged to your credit card) or you can subscribe to get it monthly. If you want the full magazine they offer that, too, for the bargain price of $12/year.
Anyway. If you recall my mentioning a fundraising auction for a liver transplant last year, and my offer, which was a short story written with the auction winner or the person of their choice as the hero or villain (with various caveats that boiled down to "I do not wish to get sued") -- this story was the result. Enjoy!