It sounds to me like these developers didn't read the app store guidelines.
I'm getting really sick of that defense for Apple. How exactly do you logically go from "Don't make apps that do what Apple devices can already do natively" to "Thou shalt not make a cool picture frame app"?
Yes, it's entirely the app developers' fault, and Apple can never be mistaken. The allmighty App Store Guidelines CLEARLY spell out for developers what they can and cannot do. They are immutable, all-encompassing, never vague, and impossible to misinterpret. If only developers would READ, we would never see any of these stories.
Argh.
(Have I just been trolled? On HN?)