EU has passed a law that will go into affect in 18 months that would require websites to get explicit consent from the user before using cookies - with the one provision, if the cookie was "strickly necessary" as in a shopping cart.
This coming from the very same people who are increase public surveillence. France passed a law recently requiring video surveillence cameras. IP video will become the defacto standard and those with old fashioned analog systems will have to upgrade.
Europe Approves New Cookie Law.
Consent will be required for cookies in Europe