[MartinCron]

Disable third-party cookies in your browser's privacy and permissions settings and this concern (mostly) goes away.

[stilist]

JavaScript/CSS still happily leak information. https://panopticlick.eff.org/ and CSS click tracking (can’t seem to turn up links right now)

[Willie_Dynamite]

You don't think google mines their access logs then?

[MartinCron]

I'm sure Google mines everything they can get their hands on, but without third-party cookies, they can no longer identify you as uniquely. For all they know, it could be 1 or 100 people behind that NAT IP address.

[Willie_Dynamite]

Try this, it may change your mind: https://panopticlick.eff.org/