They have to have the category of "Top Ten Lists" and then I think someone needs to add them here, but if you look at the Category:Top_Ten_Lists page you can see which ones are missing and move them over. If anyone wants to help do that, we'd really appreciate it!
Honestly, I think it's a good idea for an age restriction. I'm always seeing people -- really young -- putting way too much personal info on their pages. And as much as this place gets vandalized, that's not a great idea.