I think he's really proposing regulations that limit how such data can be used once uploaded. For instance, it could still be legal for Facebook to slurp your

I think he's really proposing regulations that limit how such data can be used once uploaded. For instance, it could still be legal for Facebook to slurp your friend's address book (and your profile, indirectly), but the regulation could require them to discard and purge that information if they can't immediately match it to an account.