I say "sadly", but I've seen the flip-side of this, too. A properly-formed query on usenet will turn up some back-in-the-day posts from Microsoft employees (posting with a microsoft.com reply-to) who were real assholes. (And not to pick on Microsoft, though they certainly have it coming; just the first counter-example that came to mind.)
So I guess I'm conflicted. Yeah, Benson's being really helpful and it looks good for Google, IMO. But with a different employee, it could turn really ugly if someone's back is turned.
But obviously, there's many people like Benson who provide incredibly sagely advice that do a service not just to Google's own customers, but competitors' like Amazon's customers as well.
Once a company reaches a certain size, they have way too many people to police all of them across the Internet, or ensure all of their hires contribute meaningfully online.