This is kind of a big deal: Macmillan becomes the first of the Big Six publishers to have one of its imprints reject the restrictive e-book licensing agreement known as DRM, or digital rights management.
The science fiction imprint Tor/ Forge Books announced that “by early
July 2012, [its] entire list of e-books will be available DRM-free,” according to a company press release.
That means you will be able to transfer Tor titles from the Kindle to
the Nook to the Kobo or any other e-book reader with impunity - which is
precisely what DRM controls prevent.