And just when I start getting into the whole “modern, digital public library” thing, I find the iPad isn’t going to work with this content.
EPUB, iPad and Content Interoperability
For example, EPUB content protected with Apple DRM won’t work on numerous eReaders like the Barnes & Noble nook and the Sony Reader, not to mention future, forthcoming models. Similarly, protected EPUB eBooks obtained from thousands of online booksellers (including Barnes & Noble) and most public libraries (including The New York Public Library)—are unreadable on the iPad.
clipped from blogs.adobe.com