Forum Moderators: martinibuster
1) "Premium" sites (those with more than 20 million page views a month) are subject to different rules than smaller sites.
2) Some AdSense publishers ignore the TOS. In time, they'll probably get caught, assuming that they generate enough traffic and revenue to attract Google's notice.
You can always report the offending sites if you're bothered. I tend to think that natural selection will kill them off; sites that are run by clueless Webmasters or by publishers who junk up their pages with excessive advertising aren't likely to keep their audiences over the long term.
You may display more than one (1) Ad Unit on each Site Web page, but no Ad Unit shall contain any advertisement in common with any other Ad Unit.
While on the ad layout page {https://www.google.com/adsense/adformats}
Note: Please choose only one ad format per page.
So what does this mean? I'm really comfused now....
Thanks
wing