One of the biggest misconceptions about DRM and the Kindle is that all the books in the Kindle Store are restricted by DRM. Actually, there are tens of thousands of DRM-free books in the Kindle Store, and it is relatively easy for authors or publishers to make their Kindle editions DRM-free.
Now readers, authors, and publishers have begun an effective campaign to tag and identify DRM-free books and bring positive market pressures to bear both on Amazon and publishers to make more and more titles DRM-free. Tech-publishing leader O’Reilly is the latest big publisher to make a boatload of its books DRM-free.