I guess the answer could be getting the number of impressions of that third party ads wherever its displayed.
You might have seen in DP forum saying get 15,000 ads in 10 days and so on...So I guess its related to getting impressions to the third party.
I'm not sure what you are trying to say. Can you elaborate it a bit? Particularly, how the word third party come here when the original poster is saying that he is not getting any third party ads, but the network ads itself.