I should point out that the complaint wasn't sent to me directly, but somebody I know saw it on a usenet group and forwarded it, asking whether the Tor community was aware of it.
So as Roger points out, it's not a "routine" complaint, and in fact the complainant appears to know about and understand Tor. The complaint is in fact against Google so I think ignoring it would be the right course of action in this case as I don't want to be caught up in some anti-Google argument, regardless of what the detail of the issues are.
Jonathan