The Nook Simple Touch with Glowlight is an excellent ereader. It's the best, actually. But it's not indestructible. And with new features like a frontlit display, there are new things that can go wrong. Like this frightful little light tunnel that popped up after I scratched the new Nook's screen all to hell.
That gash happened after I accidentally dropped a remote control about six inches onto the screen. Clumsy, entirely my fault, super dumb, why don't I just leave it in a bag in a bar. All true. But that's also something that'll happen day-to-day over the lifespan of an ereader. If it's not a remote, it's a set of keys or a phone or a dog's paw. And while the reading experience is vastly superior to reading on a tablet, those backlit counterparts are a little harder to nick up.