I do QA for mobile applications and am looking for some background information regarding the inability, as a developer, to respond to user reviews for iPhone apps in the App Store. I understand that this is not possible, at least today, but I need something "official" stating that. I would have hoped that this would be either in, or in a document similar to, the App Store Review Guidelines doc, but that's not the case.
I was able to see several references to this while using Google, but most are just blogs. Does anyone know if an official document exists, or a reference to this somewhere on Apples website?