Pocket-Lint: The Chromebook is a curious idea. Essentially, it's a normal laptop - albeit one too low-powered to really run Windows - that has a stripped down version of Linux installed, along with a version of Google's Chrome browser. And that's it.
There are no apps, so to speak, and everything you do, you do in the cloud. It's ideal for people who want the security of cloud backup, and who are always near a network connection. And in this day and age, it's easy to be near Wi-Fi pretty much everywhere.