[cuckcuckspruce]

How do you know it stays with Google?

From Google's Privacy Policy: We provide personal information to our affiliates and other trusted businesses or persons to process it for us, based on our instructions and in compliance with our Privacy Policy and any other appropriate confidentiality and security measures. For example, we use service providers to help us with customer support.

[rapnie]

And even without that, if they allow very specific groups of people to be targeted based on very detailed criteria, with very specific ads.. then your data still leaks to unknown 3rd parties, though indirectly.