[marcinzm]

That assumes you trust Google and many people don't. The fines companies face for violations are peanuts and there may be real incentives internally to using this data. "Accidents" happen after all in complex data systems and they're already allowed to mix the data for "security and abuse". On that note, as I read it, closing all your Google accounts as a result of suspected abuse due to DNS data would be fine under the policy.