Book Piracy. Yar!

A lot of Kindles were gifted this holiday season. I'm wondering if anyone is considering backing up their existing physical library or outright piracy.

Amazon offers several of my favorite books as ebooks, but I really don't want to pay for another copy (especially when the digital is more expensive). The two websites I've had some luck with are:

• EbookEE has a few valid links but deceptive adds.

• The Pirate Bay has an ebook sections.

But a few of the books I'm interested in are fairly obscure and no one has tried to put copies up as far as I know. Does anyone else have any good sources?