Well, count me as one still loving my K3 (now known as the Kindle Keyboard).
I've had it for about a year and a half and still have plenty of memory left over to fill up with new content.
I know some people view our world as growing smaller after the introduction of the iPad, iPad2 and now the...well, they're calling it iPad now, not iPad3, but we all know it's iPad3, right?
It's a nice device. You can read books on it. And as the latest Amazon commercials point out, you can buy a Kindle Fire and two Kindle Touch readers and still spend less than the lowest-priced current-gen iPad.
It's a different device, a different market, and it's not a dedicated eReader. Comparing iPad and Kindle Fire is fair; comparing iPad and a regular Kindle isn't quite so fair, because iPad is backlit and built to do way more than read books on.
And I believe there's big audiences for both. And even enough folks left over to leave room for Nook/Nook Touch/Nook Color/Nook Tablet users galore.
The eRevolution's still gathering steam, folks.
Over at Jim Shooter's blog, they're talking about Cory Docotorow's outdated ideas of giving away eBooks for free to sell the physical print books, and how that might be a model for comics to succeed.
That was before eBooks proved they can create their own success stories without the help of print, like Amanda Hocking, John Locke, and several others.
All this stuff might seem old hat to those of us who've been around more than a year; but I tell you, the traditional print world still hasn't realized it's been gutted. It's standing there looking down at its midsection, just starting to realize that lightning-fast ninja called eBooks actually didn't miss... it's noticing the blood start to seep from the wound... but the top half hasn't slid off the bottom half just yet.
Which is a very gross, Frank Miller/Quentin Tarrantino way of saying that to us this eBook movement is old hat... but there's a lot of folks still to join us.
So I think a flood of new faces can be a good thing. Folks who are just now asking the basic questions we asked 18 months or more ago...
...when those new visitors stop showing up? Then maybe we've reached market saturation.
We're not there. Not yet.
I love my K3. I might someday move to a color eReader... if they make one that isn't backlit. That's my hoped-for product announcement for Fall 2012 from Amazon... the non-backlit Fire 2. For $149.

But if it takes more time to get there, I'm not worried. I'd be happy to upgrade someday to a Kindle Touch if my K3/Kindle Keyboard ever kicks the bucket.
Cuz personally, I don't wanna read books on a backlit Kindle. I like the idea of the Fire... but I want a screen without glare. Having color is secondary to avoiding glare.