Originally Posted by hrickh
Are you suggesting that O'Reilly themselves put them up on Rapidshare, Pirate Bay, Isohunt, etc.? I don't know what they'd have to gain by doing so.
If not O'Reilly, it's the consumers that are uploading them.
Not at all, its usually publishers and editors who leak them. Thats why many pdf's are listed as sample only.
read this to get a general idea of how files are actually distributed. http://www.wired.com/wired/archive/13.01/topsite.html
Nobody is sitting their uploading their own bought copy.