I read this review by the NY Times... and ran across a few 3rd party apps that were mentioned. http://www.nytimes.com/2008/07/09/technology/personaltech/09pogue.html?_r=1&oref=slogin Got a little more curious and youtubed it. Essentially...you can transfer incoming calls onto the wifi connection. (So, they become free minutes) woot! *note-this is available for the original iphones with the free upgrade (also in the review) http://www.youtube.com/watch?v=aNoq5w3mkMU Edit: I don't know how to embed...so feel free to do so if you want.