Chrome OS could be an option for grandmas and office drones: people who do very basic tasks, have a single email account, don't often share documents and data with other applications, don't use professional features such as revisions tracking when editing documents, and work with just forms. At this stage, the Web apps available for Web browsers such as Chrome OS -- including Microsoft Office Web Apps, Google Docs, and the first apps available at Google's new Chrome Web Store -- are rudimentary at best. And they don't play well with each other.
Unless Google and others succeed in developing really compelling Web apps that also operate with the rest of the Web, I believe the concept of a cloud laptop will fail. Yes, Office and many other apps are way too complicated, but Chrome apps are today way too simplistic and limited. I would point Google and Chrome developers to the apps you see on the iPad as examples of a better balance between simplicity and capability, where sophistication is not sacrificed.
It's clear that Google still has a long way to go to make Chrome OS viable; six months out from formal rollout, the operating system and the apps are in no way ready for prime time. I'm frankly surprised how primitive it all is half a year away from launch, but Google did warn that it has work to do. Maybe there's a lot going on behind the scenes that will quckly come together to make Chrome OS worth considering when it is formally released. Anyhow, keep Chrome OS' early nature in mind -- the prototype laptops, for example, aren't even running a beta version of the Chrome 9 browser that they'll ship with, but instead use a version of today's Chrome 8 browser.
The Chrome OS experienceThe Chrome browser is very spare, following the general Google strategy of eliminating clutter. What you get is simply the Chrome browser as your operating system. Your "desktop" is merely a browser tab with the icons of the apps you've installed, and any app you open is just a Web page in a browser tab. You won't see many floating windows or dialog boxes. The available on-screen controls are very simple: Back, Forward, Refresh, Add to Favorites, and Settings. You can also add a Home button to the on-screen controls, an option that is turned off by default. Additionally, there's a Search key on the laptop -- that's it.