[prion]

Me, I've always thought there should be and "adult" tag in the metadata. I'm guessing pornographers would use it voluntarily -- why waste bandwidth on kids without credit cards? These guys are in business.

[softwarecreator]

Exactly.  Why have kids, or people not interested, wasting bandwidth ... this way, if you go there, it's not by accident and they would have a better chance at selling their site or products.