Originally Posted by charmian
Amazon is the same way, but from what I hear, Kobo and Sony are not, though. What's the point of even using Adobe's DRM if you can't use the books on other ereaders? (Assuming that this is indeed the case: I keep on hearing conflicting things)
If they use Adobe's DRM, it can be used cross platform (Sony, Kobo, Copia, Google Play, BooksOnBoard and others). B&N's readers support
Adobe DRM, but B&N uses their own DRM for books they sell. So... you can buy books from many places and use them on the Nook (and Sony, Kobo, etc.), but books bought from B&N can only be used on the Nook (unless you strip the DRM). Amazon uses their own format with its own DRM, so books bought from them can only be used on the Kindle (unless you strip the DRM and convert them).