I rather have a powerful Desk PC at home and a small portable (~10-max. 13.3") Laptop which weighs around 1-1.5kg instead of some wannabe Laptop-PC that costs as much as a Desk PC and a small Laptop.
Still looses vs. Desk PC in performance is insanely big and weighs around 5kg and sucks the battery dry while writing this post ;)
I'd rather have a desktop replacement laptop -- dual/quad core, 4+GB RAM, huge hard drive (or RAID set), 17"+ wide display -- and a Blackberry to carry around 24/7. I'd much rather have to search for an outlet on the very rare emergency that I need my laptop for more than an hour than not have the power to do what I need on the hardware. One laptop that can be docked into a multi display, external keyboard/mouse and rest of system peripherals at home and office that I can do EVERYTHING on. Keeping data in sync on multiple platforms is a PITA. Being able to play with all my normal settings while waiting on the completion of those 8 hour system change marathons on Sunday is well worth the sacrifices to me.
Netbooks just don't make any sense to me and don't have any chance of getting a purchase. Even at 10" they are still to big to be pocketable and if it's just random web browsing and e-mail my Blackberry is always with me and does that well enough.
I've got a USB2 based video card now that is functional, but isn't fast enough to do any real graphics on -- good enough for a 3rd monitor though. Until/unless they make the external video system's attachment back to the system something that comes standard on a desktop (maybe USB3 will be fast enough) they'll remain a niche market and priced out of most peoples budgets.