Summary: We don't want your (or your kids') data. Please don't give it to us.
Santa's Helpers is for fun only. Santa has his own means of collecting information, and we don't want to know how he does it.
Anything you tell us may end up in our logs, but we're not asking for anything. We use Google tools to help track how many times you've visited and other usage metrics, but that is just to keep our spirits bright this holiday season - we don't use them, and we can't track this info to your account.
The elves specifically warn you about some information that you may volunteer. Really - we don't want to know.
You can tell Santa's Helpers what you want for Christmas. But, as we said, we don't record that - Santa already knows, and has a far better database than we do.