Originally Posted by ultramarina
While I haven't seen a reliable source on this, a lot of people now say average age of first porn exposure is 10 or 11. So, I wouldn't presume we're all safe from it all till the teen years. Not that I've figured out how to handle this issue, other than using SafeSearch and not allowing solo YouTube wanderings.

I have heard the same thing in school internet safety talks. The lowest age I saw was 8. They said that it was usually accidental exposure at this age.