Google Has Most of My Email Because It Has All of Yours
Same with Google Analytics.<p>GA is the standard analytics for a huge % of websites - so even if a website doesn't use GA for tracking traffic, Google still has the referral data. And things like Google Adsense (i'm pretty sure that sends back the referral data too, for tracking click fraud).<p>There is no way really to avoid Google knowing a lot about you/your website anymore.