This week Google sent me an email saying they were downgrading my Google login account to "child" with intrinisic restrictions.
"For a more age-appropriate experience, Google has changed some of your settings because you aren't confirmed to be over 18.
If you're 18 or older you can verify your age when you check your settings.
"
To verify my age I have to give them my credit card details for them to do a nominal validation transfer. The email looks genuine - but I am not touching that verification process with a bargepole.