The “European e-Privacy directive” states that websites in Europe will not be allowed from using cookies unless permission is given by the user.
In my opinion this regulation will not increase privacy for EU citizens.
Maybe they had noble intentions, but it’s behind current technology. Additionally it’s questionable how to uphold such laws inside the cyberspace.
Flash cookies and why banning cookies doesn’t necessarily improve privacy for the normal user
Most ‘normal’ PC users will likely allow flash to store data on behalf of a webserver/website. It can be disabled though, see here.
Also most websites outside of the EU will still try and set cookies. Be it via embedded code or via adverts.
The best privacy you can get is be diligent with your data when it comes to the internet.
A good defence against normal cookies is using the CookieMonster plugin.
Source EU law: BBC