LearnJapanese (Sabotage Internet)
This site offers free downloads of various well-known books, audio and software (e.g., Pimsleur, Lonely Planet, Japanese for Busy People, Kanji Power 555). I am quite sure it is not at all legal, but I leave the decision whether or not to use it up to your own conscience.
Source: “Sabotage Internet” | Subject: Miscellaneous | Other