I read someplace that 60% of the English language web sites use google analytics. add in any DNS requests passing through google's DNS, adwords js views, googl

I read someplace that 60% of the English language web sites use google analytics. add in any DNS requests passing through google's DNS, adwords js views, google searches etc and it's not hard to assume they can see pretty much whatever they need to build an advertising profile for you. I suspect facebook is a close second with the tracking of outbound links from FB and "like" buttons all over...