I was actually toying with the idea of building a product around online behavior modeling with things like evercookies (http://samy.pl/evercookie/ http://samy.p

I was actually toying with the idea of building a product around online behavior modeling with things like evercookies (http://samy.pl/evercookie/ http://samy.pl/evercookie/), but after digging into what was possible with them I figured it was almost certain to be cracked down on at some point. Looks like that was a good move.