I say welcome to the new residents on Main Grid.
And I think it is a bad idea to voluntier taging teen like that, privacy is better than addvertising out the age. They shoul be thougth how to be safe and to don't tell their RL age, name, adress, tel number...
If you tag them like that, on profile or something, you are basically making them targets of pervs.
There is no a single website I know where they have such thing as disclosiring an underage private information as a website policy, to protect them?.
I insist education is the best tool, after privacy.
So welcome kids, be aware be safe and have fun.
David.