It's been 2 days since the release of Windows 7 and this netbook. With one-day shipping, I've been playing with the machine for about 6 hours. So, I have some initial thoughts, but no great insights into battery life or use while traveling (I'll try to update after my business trip next week).
My overall impression is very positive. It's small and easy to use. The keyboard and trackpad work as well as my full sized laptop. I've installed a bunch of basic programs like Firefox and have had no problems. The only minor frustration I have is one of the silly limitations of Windows 7 Starter Edition: you can't change the desktop's wallpaper. It's a silly limitation, but not worth paying to upgrade to Home Premium to overcome.
Along with the netbook, I purchased a 2 gig upgrade: Crucial Technology CT25664AC800 2GB 200-pin SODIMM DDR2 PC2-6400 Memory Module and an external DVD burner: ASUS USB 2.0 8x DVD Writer External Optical Drive SDRW-08D1S-U (Black). If you look at the pictures above you can see just how easy it is to install the memory. It did take a little more force than I liked to remove the memory cover after unscrewing the one screw, but everything else went smoothly.
Oct 28 Update: Read the comments on this review for my initial battery impressions as well as some good comments from other folks.