"If Google has a better way to do security on Linux, it should be sharing its ideas and getting community input now; presenting a new security model as a fait accompli months from now will not be helpful."
Whilst I would also be interested to see their ideas and developments, and agree that security is always improved by peer review from security grown-ups, if they really are "completely redesigning the underlying security architecture of the OS" that suggests that their security model would be a radical departure from that currently supported by Linux, perhaps breaking Posix and Posix-like compatibility. Such a change would, I suspect, be unlikely to ever get near being included upstream and hence may not have got much interest from that community anyway.
Personally, I'm much too wary of giving my data away on the cloud to a commercial infrastructure I've got no visibility of, and which could be accessed by who-knows-who within Google or whichever company hosts these kind of services. It might be paranoia, but I always feel that's far more of a security risk than access control on my laptop - at least I have some control over that.
It certainly will be interesting, though. I also noticed that the BBC initially pitched the story as a "potential blow to Linux on netbooks" until, presumably, someone informed them that Linux was underneath it after all...!