<i>"Apple might as well not care and happily approve the app if such terms didn't exist?"</i><p>Likely so. Note that there is a Skype app for the iPhone but it is restricted such that it will only make voice calls through wifi. It's rumored that AT&#38;T has been opposed to VoIP traffic over its 3G data network though it has just recently finished work necessary to make such things feasible and may reverse its earlier decisions (paving the way for full-featured skype and google voice iPhone apps).