Apple to Allow VoIP Over WiFi

[techpr]

If someone develops a VoIP program for the iPhone, Apple will only prevent it from making calls over a cell network to protect poor little AT&T. If you're in a WiFi hotspot, however, go nuts. This opens up a pretty big door for developers to make some sweet programs that'll save you quite a few cell minutes.

More... (http://digg.com/apple/Apple_to_Allow_VoIP_Over_WiFi)