Comment by chongli

Just put no cross-origin resources into my proposal. This eliminates ad networks entirely, including networked tracking pixels and networked ads (banners as well as text).

Yes, a site would still be able to host their own ads but advertisers wouldn’t be able to collect any analytics without implicitly trusting the host site. That really matters!

It means the advertisers need to enter a business relationship with the site directly. They can’t simply join a JavaScript ad-auction (the way nearly all ads work now). This makes them more akin to the sponsors we see now in videos. No tracking, just plain old fashioned audience targeting pertaining to the subject matter.