To mitigate this, I use Firefox along with RequestPolicy.
»
www.requestpolicy.com/faq.htmlThe RequestPolicy addon prevents cross domain requests from completing unless the user whitelists the cross domain request.
It is CPU intensive. On my Pentium 4 computer, browsing slows down quite a bit. But on my I7-3770, there is no delay that concerns me.
But, even on the Pentium 4, it was worth it to me to prevent the profiling and tracking that is going on.