I discovered yesterday, by accident, that the ereader side of the edge can now read Barnes and Noble books. I had installed the Nook app and uninstalled, since I usually don't read on the LCD side. I found the Nook folder was still in my internal storage and clicked on one of the epub books. A window popped open on the reader and prompted me for a password rather than saying this book was registered to another user. It took me a few tries, but, I finally realized my password is my real name (the name my B&N account uses for purchasing) and my credit card number (the one I used to purchase the books, on file at B&N) this number is the password for all, even the free books. The reader seems to have stored this info, all of the B&N books open now, no password prompt. That was one of biggest aggravations with B&N in the past, knowing that if I bought a book it was only mine if I used their device to read it. The B&N books open on the Adobe Digital Editions on the PC too. Nice!
Edit, not all open on the PC yet, but an update to Adobe Reader Software is in the works,
http://www.adobe.com/devnet/digitalp...noble_faq.html
Not quite so important as reading on the edge, but a definite plus in the ebook world.