While having my everyday 'read some digg' time, I found a very usefull website (actually, it is a LOT more than a website) called YouOS

What the hell is this?
YouOS is a WebOS (Web Operating System), which allows you to create your online 'virtual' desktop with space storage, programs (in this case, they are called apps) and such..

YouOS is a fully extensible (through its IDE, already avaliable) javascript based OS. A bunch of 'apps' are already avaliable and you can for exemple send emails between users (a functionality for mobiles phone -via sms- is also avaliable; and 'external' email seding/receiving is underway), upload files, write richtext and then save it, chat (between users only at-time, will be open to global networks in the near future) [.insert your awsome idea here.] In other words: it's extensible at will :)

Programmers may particulary be intereted in this, as the code (which seems to be java(script), opens an infinity of possibilities; imagine. code. use.

Another step for Web 2.0 has been made.

YourOS - "click here and thou shall not regret your actions" King Lear

I would like to precise that this is still under alpha testing, you can expect tons of funcionalities to be added the coming weeks/months.