Nothing more fun than reading about innovative monetization models:
Currently, to pay the authors who publish through Amazon directly, the company sets aside a pool of cash each month—this month it is $3 million—and divides it among the authors. In the past, Amazon measured the number of “borrows,” or downloads, and computed each author’s share of the pool accordingly. In February, one “borrow” of one of my books was worth $1.38. That’s not a bad amount for a short book, but it’s much less than the royalties that a big book might earn.