Recently I was studying responsive design a lot and designed couple of sites. But i was wondering how would I use google adsense (which is pixel based) ads on my responsive design?
Very typical example is suppose I have a
728x90 ads on header. Or if i do a mobile first approach i would need different versions of ad sizes for different view posts but google doesn't allow more than three ad unit per page (as far as i know).
So, Question: What is the right approach/best practice of using google adsense on a responsive site design?