There'll never be a way of filtering it correctly (is ASCII art of sex acts posted to reddit porn?) so the only real option is ensure people are aware of the ri

There'll never be a way of filtering it correctly (is ASCII art of sex acts posted to reddit porn?) so the only real option is ensure people are aware of the risks (whatever they might be). Opting out is already possible today - don't visit porn websites if you don't want to see it.