FAQ: "I want to send you money"
People keep asking me "I liked the book and I want to send you some money. How do I do that?"
The short answer is, I'd rather you didn't.
The long answer is, if I start accepting money for the ebook I also have to accept certain consequences. Firstly, I'd be in breach of the contract I signed that says my publishers have the exclusive right to sell the ebook edition for money. Secondly, I'd have to start tracking that income stream and keeping accounts for the Inland Revenue (which means spending my time on book-keeping rather than book-writing). Thirdly and most significantly, if you send me money directly rather than buying the book, my publishers will end up selling fewer copies. If they do that, they'll judge the book to be less of a success than it would otherwise be, and they'll print fewer copies of my next novel.
So I don't want money for downloads of "Accelerando".
If you like the book, I hope you'll buy a paper copy of it. (Or a paper copy of one of my other books.) If you don't like owning lumps of dead tree, consider buying a copy as a present for someone who'll appreciate it. If you think the hardcover's too expensive, feel free to wait for the paperback to come out (but note that I receive five times as much money per hardcover sale as I get from a paperback).
Finally, don't feel you're under any obligation to send me money. All I'm doing is saving you a trip to your local library. Do you feel compelled to send money to authors whose books you borrow from the library? No? I didn't think so – and I don't hold it against you. If you enjoy "Accelerando", just spread the word and/or buy a copy. That's good enough for me.