there is this site with online warez movies. It's serving AdSense from same AdSense account-id since at least September 2014.
Site has quite a lot traffic (more than 1 000 000 / month )
Domain is already banned in AdSense, but if you inspect source code you can see ads are served via iframe/embed.
I am 100% sure AdSense team is very well aware of this publisher and what he is doing.
It looks like if you have enough traffic and you are eager to break rules google will tolerate you (maybe you are generating them nice money)
What I dont understand is why I never saw something similar with much bigger similar sites.
I also think sites like this are possibly stealing revenue from legit adsense publishers who follow rules (advertisers dont have infinite budget )
[edited by: martinibuster at 8:17 pm (utc) on May 28, 2015]
[edit reason] Removed URL [/edit]