[Pxtl]

My general fix for web tracking cookies:

HTTP requests sent from my browser page when viewing Foo.com to Bar.com have no cookies. Javascript is available to create an explicit pop-up requesting permission to share your cookies with Bar.com.

When I go to Foo.com, my relationship is with Foo.com. I'm okay with being tracked by Foo.com when I'm on Foo.com, but if bar.com is going to track me then I want to be asked.

That said, Foo and Bar could still share information about me directly without going through my browser, but without the cookie feature it would be very hard for Foo and Bar's profiles on the person Pxtl are the same person.