Is there still a point to use AdMob? Has it been or will it be banned by Apple? Is there an third-party interface solution that allows me to switch between the services later on server side?
In fact it is very easy to use both even in the same application!
You can find a detailed explanation at this site: http://www.apptite.be/tutorial_mixing_ads.php
But in-short the idea behind it is to:
It even uses a sliding effect to hide and show the advertisements in the bottom of the screen.
So far I can't give a correct number on the revenue, but I can say that the fill rate for iAd is around 30% and for Admob around 95%
Hope this helps you out!
Regards, Luc