Configuring a google account for a child My kids each recently got tablets, but I am struggling with setting up their accounts. I have 'temporarily' set the one up to have my google account as the account holder, because I was not able to 'legitimately' create an account for my child (younger than 13, so Google refused to create the account).

Now, I use my Google account as my primary OpenID authentication for many things, including here at Stack Exchange, and, as a moderator on one site, I have discovered that the tablet inherits the authentication from there, and my kid's tablet now has moderator 'permissions'. This is obviously untenable.

My questions are:


do people just 'lie' on the google forms for account creation in order to create new accounts for their under-age kids?
do you create a new google account with 'my' details and let the kid's tablet borrow them? (and, if I have a separate account do I need a separate Credit Card?)
is there a system I missed when setting things up, such that you can avoid the trickery?
if I want to install non-free apps on the device (to remove advertising, etc.) how does one go about 'adding' a credit card to an account like that? Can you use your credit-card on multiple accounts?
if I buy apps now with my google account, and then later change accounts for the kids, will I have to re-buy the apps?
Yes, you have to lie. 
A separate google-account is the only way to protect your under-age kid.

All other options have these restrictions:


no privacy settings. 
apps using of private data can not be restricted.
child can not install child safe games.
child is not allowed to communicate with parent using text messages.
child always uses parent account.
only one age, so only one child possible. 
all data of child is lost when the child is allowed its own account.
apps of all children are also your apps.
child can not have contact information.
you are not allowed to create a google+ page for your child.
children receive all notifications. E.g. your private e-mail.
etc.


I just found out again by not lying. All drawings, letters to grandma, games and in-game-progress, pictures etc are gone.