Skype is Cool

I am cheap. I do not want to pay for international phone calls while I am away but I do want to talk with my wife and kids, at least every once in a while. So, I downloaded Skype to my laptop and our desktop, bought two $10 headphone/microphone combinations, and tested it out at home. After we figured out how to turn off the microphone mute button, it worked like a champ. There is a bit of a conversation lag, but, it wasn't too bad for our purposes. How long will international long distance survive?