Good. There needs to be a US-wide law that any method used to sign up for a subscription has to be a valid way to unsubscribe too. If you allow users to sign up

Good. There needs to be a US-wide law that any method used to sign up for a subscription has to be a valid way to unsubscribe too. If you allow users to sign up online, you should also be required to let them unsubscribe online too. Basically, take the Californian setup, and apply it to the whole US. And pretty much every country in Europe.