Free Over The Web Via Wi Fi

I used my iPod Touch to call a friend in Colorado. The call was free over the Internet. Utilizing Wi Fi and VOiP, Using a fantastically good app called iCall, I made a free 5 minute call.
Calls over the web are way cheaper than cell calls and doing it from an iPod Touch, is a great thing.

I will be using minimalist cell service & more Voice Over Internet Protocol.