Chrome OS is a different Operating System. It is basically just a browser where all your data is stored in the Google main server. Wondering how google prevents other from accessing your data?? Well its simple... Google Chrome Os asks for your gmail id and password every time you log into your personal OS....
One major disadvantage of this is that it might pave a new way for hackers and crackers to steal personal information just by hacking your gmail id...
But as we all know, google is the king and might have developed a new technology to prevent such cyber crimes...
It has to be noted that the number of firefox and internet Explorer users had reduced by 30% when google released its Chrome web browser..
We expect the same with Chrome OS as well... looks like Os like windows and mac are going to face tough competition..
Google Chrome OS is absolutely FREE!!!