what is a coppa?

[cryonic.]

well, what is it?

[Princess Luna]

It's an American child protection law that prevents children under the age of 13 from using forums and messaging people.

[Erisolsprite]

^ What Princess Luna said. ^_^

[drive-in saturday]

I'd also like to add this excerpt from -Firestar-'s FAQ; it explains COPPA a bit more than what's already been said.

What is COPPA?
Children's Online Privacy Protection Act
US residents under 13 year old can not post on the forums or send messages, except on oekaki. They get uncoppa'd either when they turn 13, or if their parents send in a permission slip.