It is supprise me that this site last more than 3 months with porn on it! Has Google change its policy to allow porn now? I remember i reported it 3 months ago. And now when i check it back. It is still there. :d Porn: http://thegioitien.com/index.php Adsense: http://thegioitien.com/4rum Funny eh.
If your that worried about it report the site, you can check the current policies and terms of service via your AdSense account. No need to make a thread about it
I think it might be what Google call - erotic website, not porn, so that is allowed on Google adsense.
May be the site is using adsense again and again after being banned. Anyway, you can report it to google, lets see when they will ban them.