I have no memory of what I might be getting paid for by Amazon. I doubt it's from my Amazon Associates program. I haven't used that in nearly a decade, and when I did use it, it was such a complete failure that it couldn't have generate even twenty-six dollars' worth of income. Or maybe that's what it is and I've simply forgotten, but I prefer to think of it as a mystery.
A mystery that netted me a free DVD of Doctor Who: The Deadly Assassin, with commentary by Tom Baker! Thank you, mysterious Amazon gift certificate! And the vengeful ghost of Mary Whitehouse thanks you too!