-
So Google are blocking scripts that call document.write (on slow connections, anyway): developers.google.com/web/updates/2016/08/removing-document-write
-
More interestingly: Google has a list of "interventions" it makes where it ignores web standards for UX reasons: github.com/WICG/interventions
-
Any ad provider that still does this in 2016 deserves it, to be honest.