You can get 1 free Kindle download a month with Amazon prime. However, I think Porn is leading the way on that one. There are plenty of sites that give you access to a growing collection of stories for a monthly price, and one that allows free access to it's collection but charges for a better search and bookmarking system.

Which I guess boils down to either the patronage system, where you can sponsors people to write (ex: epic poetry) or the organizational system where you can distribute free content and then give kickback to the most popular authors like many blogging systems do.

PS: Batoto.com is an odd mix as it returns money to people who translate works but not the original authors. Sort of like a pirates auction house. The advantage for users being a nice interface and rapid updates.