I have one and am using it right now! The accessories are great and the netbook itself is fantastic for travel. You do get a lot of comments on how small it is, which you stop noticing after a while.
As far as the battery life goes, I know some people are saying it's very short, but... well, just to give you an idea, I'm not plugged in and haven't been for several hours. I haven't been actively using it, but it's been on and open and in power-saving mode. Right now, I have 3 hours left and that's about 60% (according to the battery meter on the low-bar.)
The screen can be a bit small if you're trying to look at "the big picture" (i.e. enlarging the shirt.woot designs) but it's rarely a message. I run Chrome instead of Firefox and find that it gives me a lot more browser-viewing room.
The keyboard can seem a bit small at times (I fat-finger everything, though) but it's really not an issue. If you can use a cell phone to text, then you have nothing to complain about.
I've never ever had a problem with it over-heating, ever. Right now it's sitting comfortably on my lap, and it was on and plugged in over night. Night music to soothe the soul, you see! My hands and legs are all fine.
To be quite frank, I put off getting a netbook for a long time. Even though they're ideal for my frequent travelling, I was worried about having to maintain two computers in order to still be able to sync my zune with new music. But the usb cd drive solved that problem. I only wish I had bought this at woot instead of at costco, it'd have saved me about $100!
Bottom line, I think this is a really good item, ESPECIALLY if you do any travelling, need your computer to come with you everywhere, or just want something you can stick in a bag and not break your back.