[BSMedia]

Originally Posted by DieselMinded

You can only have 3 ads per page !

if you have google ad script in your header or footer you most likely are violating the google terms of service and will be banned.

https://www.google.com/adsense/adsense-resources

Neither of these are really accurate. While you can only have 3 "Adsense for content" advertisements per page, you can also have 3 Link Units and 2 search boxes on that page as well.

You can also have Google Ads in your header and footer, provided you aren't displaying them on member only pages (Use if script = UserCP, Private, etc etc), however Google appears to be very lenient with forums placing of these advertisements, and in the 4+ years I've used adsense on forums I've never had a problem with a global header or footer advertisement.