I don't think that that option accomplishes the same, or is even similar. What about sites that you never visit (= type in address bar / follow links to) direc

I don't think that that option accomplishes the same, or is even similar. What about sites that you never visit (= type in address bar / follow links to) directly, but which are on some subdomain of the visited site nonetheless? Cookiemonster will accept the cookie. Firefox, with your config, will not. What about sites that you do visit (eg facebook.com) but don't want to accept/send third party cookies for? Firefox, with your config, will. Cookiemonster won't.