I can see that, truly. And I
do find the results interesting, though not really unexpected, if only because of the sheer number of people who clicked the ad(s).
May I recommend something to mitigate this sort of thing in the future? Set up a script to launch an emulator for each of your apps which rely on others' services, unit test their core functionality, and save a screenshot of the key screens. Run it when you feel like it, come back in a few minutes, and peek at the pictures / pass / fail.
Though, that said, I have not used the iPhone emulator. Can it be easily (enough) scripted to do something like that? I would certainly hope so, but I've been disappointed in development tools before.