iPhone - Moving a valid advert Offscreen

I have a banner Advert view (could be an iAd or another type) and It loads an advert.

Now after it has loaded, I might want to move it offscreen (for example when I load a complex UI, I dont want to confuse the user, so I hide the a开发者_运维知识库d).

My question is, will the advert know its offscreen? I.e. Will it stop updating its CPM and adjust advertising revenues accordingly, or will I be violating some kind of terms of service by pretending I am showing an advert when really its hidden?

The iAd ADBannerView will detect that it is not visible, so you can assume it will take appropriate action. There is no way to make a categorical statement about any generic advertising program.