guggi2000 - 5:06 pm on Apr 16, 2013 (gmt 0)
@levo thanks, that helped a lot. The google publisher tags (GPT) will render into iframes:
So I assume that since DFP and Adsense are well integrated and even if the Adsense is displayed in iframe automatically Adsense will know the page (contextual) content due to the calling DFP tags (and origin of the page).
Meanwhile, I have spoken to Sales Reps of many ad networks yesterday and today and all said that placing Adsense as fallback is common practice used by thousands of publishers including major companies.
This fact does not make it right, of course...