Under Age Usage..

[JCphotog]

The other day, a user asked a question about age appropriate material.  My forum isn't out in the zone, but it is a community of artists and brings up several adult topics like figure drawing.  I'm curious if any of you have found some good resources on the internet and age appropriate material. 

I'm thinking about adding a few lines to the Terms of Use about age, and I was curious if you had any input on the subject.

Thanks..