I use the *buntu and Suse variants of Linux on a daily basis. Unless this offers any real advantage I won't move to it even it I purchase a netbook with it I would probably format and load Ubuntu on it.
And YOU are the last person Google is trying to get as a user for the Chrome OS. You're already in the Open Source boat, and in fact, you're helping row!
Google can make a big difference if they provide a lightweight OS that runs on cheap equipment and gets the user decent Web functionality. Get their email(GMail), their Facebook, their YouTube and their free Flash games. And get all the advertising that goes with it.
Maybe even write some papers and share photos with friends (store said content in the Cloud and never lose their stuff).
Currently, Charter Communications (Boo!) a big Evil ISP, doesn't even support Windows 98se, Windows Millenium, and Windows 2000 computers. They don't support Mac OS9 or Linux either. If one of their customers calls up their tech support for any of these operating systems, they say "Sorry, not supported, can't help you".
Even though every one of these OSs are perfectly capable of connecting to Charter's high-speed connections and using their POP email clients. I set em' up all the time. Works great.
But ask Charter and they say "Sorry, not supported. Click."
Chrome OS, from Google, and with a simple set of instructions for email and ISP connections (phone droid scripts) instantly gets over this major hurdle for computer doofuses (Gawd luv em'). A single Chrome OS, based on Linux, can be the gold standard for the unwashed masses, that gets them out of the clutches of Micro$oft and $teve Jobs (for case designers) (BTW, I luv Steve, have used Apples since the Apple II, and own Apple stock--but a lot of folks resist giving up the coin needed to get that first Apple computer).
If Google pulls off a lightweight OS with the core functionality "the folks" need, that can run on the cheap hardware that is currently choking our landfills, it will be huge. HHHUUUUUUUUUGGGGGEEEE! {/Donald Trump}