First of all, this thread should be a sticky, it took me a bit to find it again.
The book is Accelerando, by Charles Stross. It's 6.39$ at the Connect store and, get this,
free here, care of Mr Stross himself. Which I found out only after buying the book from Connect.
He also put up a number of other novels and short stories online, but none of them are on Connect. Yet.
So, this is what a money-printing operation looks like.