- So what is an unglued ebook?
An unglued ebook is a free ebook, not an ebook that you don't pay for!
Unglued ebooks use a Creative Commons or other free license to counteract the stucked-ness of "all rights reserved" copyrights. Sometimes, payments are made to the author, publisher, or other rights holder to facilitate the ungluing.
What does this mean for you? If you're a book lover, you can read unglued ebooks for free, on the device of your choice, in the format of your choice, and share them with all your friends. If you're a library, you can lend them to your patrons with no checkout limits or simultaneous user restrictions, and preserve them however you think best. If you're a rights holder, you retain copyright in your work.