I found one site while surfing. It contains porn and half-porn contents, So question is why Google is not baning it.? Or Google has started to survive ads on porn sites
Probably he registered with another site for adsense, you can check by clicking the "Advertise on this site" link and it will usually show you what site the user registered on adsense with. And google just probably hasnt been monitering their sites very well lately i guess.
That is blatantly against TOS. He has nude pictures there. As soon as google comes across that site, his/her account will be banned.