And no word yet from Google... Their lack of customer service is going to end up killing them in a number of markets. I would never use Google for any critical business function (email, payments, cloud computing).
I don't think the people arguing with Justin in that thread are novices or naive users, but they do seem to be unaware that when you lend your computer to someone, you should set them up with their own user account if you don't want them surfing through your stuff.
It's funny how the tech community browbeat Microsoft for years about how Windows should have been designed as a multiuser system like Unix, and then when Microsoft finally took their advice and made the necessary user-level security improvements, their efforts were ignored.
Afraid you've missed the point in the same way as Justin did... Those people (me included) are perfectly aware of that. The argument is that your mother isn't, and while it's reasonable to expect her to be, you can't just assume such.