Years ago, I received a detailed email from someone claiming to be part of the police force. He wasn't emailing me in an official capacity but did encourage me to be more vigilant about preventing kids from accessing my site. Don't know if it was a troll or for real, but I decided it was time to lock things down, and immediately added ICRA labels (which parental blocking software sees) and copious text warnings to my site.
You can never be sure who's at the computer or how they may arrive at your site. Horny 15 year old kid who is specifically seeking out pr0n? Probably not much you can do. 9 year old girl who loads your page when looking through results of an images search for a completely innocent term? NOPE!
