Allow me to Digress some more
It's not illegal... it's part of the terms of service that you agree to when you sign up with them, they openly use
all of your info for "marketing" and "product service".
The difference of FB vs Google is this. Facebook is about selling your info and ever changing privacy policies so they can do this as best as they can. Google outright tells you they do this(like scanning your incoming e-mail for marketing reasons). And the problem is not them themselves(lul)... it's the people who ask for the information, usually in the form of a subpoena.
Don't Forget these two services, and the many like them are PROFILES.... on you

... and don't forget Googles motto, "Don't be evil"
Only you can prevent forest fires