How to stop dispaying plastic moulds and plastic machinery and plastic pipes ads on a plastic surgery site? I asked that question at Google webmasters and got one helpless answer from another webmaster if I use Google <- -> to define a paragraph for Adsense. But that's stupid. My whole site is dedicated to plastic surgery. I dont need to define anything. As if my site was dedicated to plastic pipes and I want to display plastic surgery ads. Google anderstands exactly what is the site about. It's about "plastic", so he dispays plastic ads. But how to make him display plastic surgery not machinery?