This comment may be down voted here. But i think there is a case to be made for a new law that mandates the ISP's to password protect all porn websites by default.
Pirate Bay and other trackers, for example.
BTB, I am not talking about blocking porn, just users should go through a password wall. Also the users should be able to change this default setting if they like. This is not much different from the password protection for adult content offered by many cable tv companies.