I am the happy owner of a first-generation Nook ereader device. I opted to purchase a Nook, back when they first came out, because I already owned a few dozen books from ereader.com, a site that was owned by Barnes and Noble and whose books could be read on the Nook.
In order to read my ereader.com content on the Nook, I had to transfer my ereader.com books onto a micro-SD card and install that into the Nook. Done, and done. I can now read said books on my first-generation Nook.
In recent weeks, however, I have had some issues with the charging port of the Nook. It's long past its warranty date, and I saw a back-to-school sale on the Nook SimpleTouch with Glowlight. So I thought I'd better procure a backup device, and I went for it.
My new device arrived today. It's lovely and portable, and of course all my B&N books came right up when I logged into my B&N account. However, I discovered a few things that will ensure that I keep my first-gen device as well.
1. First-gen devices have a daily free article, as well as a link to a free weekly ebook on Free Fridays. There is no evidence that the newer device has access to that content. (It's probably available on the Nook tablet, but I already have an iPad so I didn't spring for the tablet.) And even though the newer device has a microSD slot, it isn't able to read my ereader.com content off the card I already have.
So I will now proceed to make use of the features on BOTH devices: the touchscreen, integrated light, greater portability and reliable charge port on the newer Nook, and the free daily/weekly content and the ereader.com accessibility on my first-gen Nook (whose third-party cover has a built-in light). I shall call this a WIN on both counts.