Google Publishes Policy For Dealing With Government Data-Snooping
Basically, if you want anonymity, take care of it yourself
Privacy is a constant concern for Internet users, and Google today detailed how it approaches government requests for user data.
That includes a new section the company today added to its Transparency Report that answers questions users may have, such as "In what situations wouldn't you tell me about a request for my information?" (The answer is: Google can't notify you if your account is closed or if the company is legally prohibited from doing so. "We sometimes fight to give users notice of a data request by seeking to lift gag orders or unseal search warrants.")