If that's possible, it's a great idea!

You think marking something as containing a virus or saying it's an FBI tracker file is gonna do anything? Gimme a fucking break. You're fighting a battle that can't be won because first off child pornography is EVERYWHERE. There's nothing ANYBODY can do to stop it. And second of all, it's on the fucking INTERNET. Where people make accounts and pass that shit to each other like it was drugs.