Well, the point is, nook has better support for epub, thus nook is good for ebooks. Hence, the topic is a lie.
Let's say you bought a digital camera which takes AA batteries and then a few years later Energizer makes Lithium AA (or Rayovac makes rechargeable alkalines, or whatever) batteries and you find out they don't work in your camera. I don't see how Energizer is at fault.
B&N sells you a digital product and provides you with a variety of ways to avail of it: for free on Windows/Mac/iPhone or on the paid specialty device. On the front page of the e-book section (
http://www.barnesandnoble.com/ebooks/index.asp) there's a box on the right which lists your options. You choose to ignore this and complain that it's not readable on the device which core software hasn't been updated for years.
I don't see how anything is implied. Since when the "ebook" implies it can be read on any freaking device? On the first ebook page I've looked at (
http://search.barnesandnoble.com/I-A...4538&inframe=y), immediately below "Available for download" it again lists your options and there's a link for additional details.
You believe that they *must* put a warning that the content might not be readable on other devices and you're certainly entitled to your opinion. Still, nook has better support for epub, thus nook is good for ebooks. Hence, the topic is a lie.
The fact that B&N does not issue refunds for people who paid for content with the assumption they'd be able to read it with outdated software is shameful, but it doesn't make the topic any less lie.