I thought I was ordering a mini keyboard, and discovered my mistake too late to cancel the order, since it was already in preparation for shipment. But now that I have it, I'm finding it useful because I'm a lounging type of person, and when I play Scrabble on my large, extended monitor I tend to turn my chair to face the screen, and put my feet up on a stool, and then if I want to use the dictionary, my laptop keyboard is not within easy reach. So I sit this thing on my lap and it does the job.
It's a decent backup keyboard, slightly more compact than my Netbook's keyboard. I like that I can turn it on and off, although the switch is tiny and quite stiff (and rough so it hurts my finger pad, and I have to use a fingernail to get it to slide), and I like that it can use rechargeable AA batteries.
There's no indicator light to tell you when CAPs lock is on, but that's pretty common on small keyboards (my 11.5 inch Acer 64 bit, dual core netbook for instance) so I'm more or less used to that. The keyboard layout itself takes a bit of getting used to. I'm a touch typist and sometimes find I've typed some amusing things because the little rise on the "J" key is a bit too subtle to keep my fingers where they should be. And the Enter key is small, horizontal rather than vertical, and not directly under the Backspace key where I've come to expect it. The touchpad seems slightly draggy to me, but I'm mostly a mouse user, so it's not an issue for me.
In general, it seems well-constructed, nothing horribly wrong with it at all, and does the job it's meant to.