Cheap VOIP iPhone Calls
AT&T and Apple Allow Cheap VoIP Calls on 3G
More news from Apple: use your iPhone for VoIP calls and save yourself a bundle. The New York Times has a rundown on the variety of plans you can choose from. Stay tuned for Skype's response.
"In all of the hullabaloo over it the iPad, a long-awaited change to the iPhone got lost in the shuffle: Apple has taken the wraps off VoIP calls over the 3G network. That could mean a potentially huge savings on domestic and foreign calls.
The reason is VoIP calls use data minutes rather than voice minutes. That means that you could buy a plan with minimal number of minutes -- fewer than you actually use -- as long as you have an unlimited data plan. Then you could make as many calls as you want over data..."