From Trusted Reviews:

We saw the first Chrome OS laptop last year when Google released the strangely named Cr-48 notebook. At the time we were told that a number of manufacturers were planning on releasing laptops running the new OS during 2011 and today details of offerings from Acer and Samsung have been revealed.

From PC World

Tired of your netbook's tiny touchpad? Here's how to install a touchscreen.
Is your netbook envious of touch-driven devices? You can't turn your netbook into an iPad, but you can retrofit it with a touchscreen and avoid the tiny touchpad.

WARNING: Only skilled or daring hardware hackers should attempt this process. Voiding the warranty is the least of your concerns; you'll have to solder parts together, cut away some of the laptop's plastic housing, and otherwise make permanent changes that you can't undo. Make the wrong move, and you'll break the laptop. We are not responsible for anything that goes wrong with your PC as a result of your following our instructions.

From Reg Hardware:

Sony discovered it had a major problem when the first round of netbooks hit the market in late 2007. Having spent years educating well-heeled consumers that small notebooks were expensive, shoppers were hit by a deluge of small, light laptops that did everything they wanted for a fraction of Sony's traditionally high prices.

From Ars Technica:

New rumors peg the long-awaited arrival of ARM-based netbooks, often called "smartbooks," for the final quarter of this year. They probably won't dethrone Atom, but they will give the platform a taste of what it did to the laptop.