> > Where i come from ISP's dynamic IP lease times are *very* long, you
> > need to reboot the home router to get a new IP and even then you may
> > get the same IP. It's not that dynamic, at all. Add that with data
> > your browser provides, your *.google.com in|direct usage, etc... it's
> > easy to correlate and monetize.
>
> Don't assume even that every home uses has a temporary IP number.
> Mine is permanant.
>

Interstingly, all the discussion here has assumed IPv4. Using IPv6 each
machine can become visible, although use of RFC4921 privacy extensions
would make it more like IPv4 with temp. IP address. And yes google provide
a free public IPv6 DNS service.