I'm so sick of people marketing a collection of user-level application being implemented as web applications as an "Operating System". It's absurd. Even in this

I'm so sick of people marketing a collection of user-level application being implemented as web applications as an "Operating System". It's absurd. Even in this article the author betrays this absurdity by claiming "you can switch over to Windows or whatever OS may be running". So this machine is actually running two operating systems? What?! Also, this isn't even a Cloud OS! This appears to be a user-level program (a browser) that is just provides linkage to other user-level programs (Google Docs, etc.). A Cloud OS is (as far as I understand it) some OS that is specialized to provide support the cloud from the server perspective. Maybe I'm wrong, I can barely keep up with the buzz words.