Quote:
Originally Posted by JSWolf
A PD eBook is public domain.
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Books where the copyright has expired, so you can freely copy. A "free" download from a book seller (common with retail ebooks) isn't PD, it's just a zero charge and is subject to copyright, a friend needs to download their own copy. Maybe one retail site also does some PD books. Also retail sold Classic/Old ebooks and paper books may be actually PD, so don't waste money buying them unless you can't find a PD copy on Gutenberg or similar. Unfortunately the Internet Archive offers copyright and PD ebooks (mostly not real ebooks, but PDF scans and epub/Kindle conversions from OCR without proofing) and they do not properly check that that they are not violating copyright with their offer of a free download.
CC (creative commons) is copyright where the holder says they are not charging. CC zero can be copied to anyone. But CC, even CC zero is not PD.