Generally they spam you with a letter or email or popup window or something when terms change. You make it sound kind of like keeping your software up to date,

Generally they spam you with a letter or email or popup window or something when terms change. You make it sound kind of like keeping your software up to date, which is an interesting way to look at it. Perhaps in the future legal aspects of life will be just another kind of software updating, with the govt rolling out emergency patches and big annual feature packs.