I'm kind of unsure if piracy is on net good or bad for the world (although it's clearly good selfishly), but what the hell: gen.lib.rus.ec and lib.homelinux.org (username: gek and password: gek) are excellent sources for books about mathematics and related fields.
"good selfishly" is at least an oxymoron, though I would consider it a contradiction in terms. That said, it's not at all clear that piracy is in one's rational self-interest, all things considered.
While I'm not sure it has direct bearing here, Software Ownership and Natural Rights by Richard Volkman is still one of the best accessible papers that's been written on the subject from the social point of view, though it's about 10 years old now.
This is a place to consolidate book recommendations.
I'm reading The Logic of Failure and enjoying it quite a bit. I wasn't sure whether I'd heard of it here, and I found a post here called Great Books of Failure, an article which hadn't crossed my path before.
There's a recent thread about books for a gifted young teen and a slightly less recent discussion of books on cogsci thread which might or might not be found by someone looking for good books.
So, what books or lists of books do you recommend?