According to Adsense Program Policies: "Publishers may place up to three AdSense for content units on one webpage. This includes a maximum of one 300x600 ad unit (or similar sized ad) per page." Source: https://support.google.com/adsense/answer/1346295 Does that mean that I can't put two 728x90 Banners on one page? Does that mean that I can't put two 160x600 Skyscrapers on one page? What does "or similar sized ad" refer to? It's very unclear to me. Thank you