ChromeOS seems to be redefining computing for many users. The concept of a "cloud-only" environment is new and really takes some effort to understand. With ChromeOS, the user won't need to worry about files and folders anymore. Users only need to worry about content. Photos, Movies, Documents, etc. Hopefully with a sensible name.
I'm not sure how Google wants to go forward in managing this without the legacy concept of folders and files, but we'll see.
 @luclodder indeed commented that Google is already doing this in gmail using tags and search.
Back in 1998, 1999 there was a small company called Be Inc. Their success on the desktop was not what they expected and Jean Louis Gassée, the CEO of Be came up with the "brilliant" idea to start making so-called internet devices. Lightweight devices running BeOS. The iPad, archived on Scot Hacker's site here: http://www.birdhouse.org/beos/byte/07-IPAD/ was one example. Be wanted to be inside every device. From your fridge (ordering milk if needed) to TV (web experience).
The idea never took off, and eventually Be Inc was bought by Palm and we never saw anything from BeOS or iPad again.
It does seem though that the time is now right for these devices. ChromeOS seems to be made for lightweight devices.
Most people now think that ChromeOS will be for lite netbooks, a laptop like computer that you carry around. But Google could take this much further. ChromeOS can essentially run in any device.
Imagine having a small touch-enabled screen in the kitchen. Connected to the internet, you are just a few clicks away from ordering groceries. Or check your email while waiting for the oven, or load that latest recipe from that cooking forum.
ChromeOS can run in your TV set. Streaming the latest movies. Playing the latest games. Chatting with friends and relatives. Or even in your car. Guiding you towards that new restaurant you want to try. Streaming your favorite radio channel.
Just regarding ChromeOS as a means for an even lighter netbook is shortsighted. It looks as if Google is reaching beyond this, it wants to be everywhere.
1984 and 1999 all over again?