I first learned about Skype right before I left to study abroad in China during the summer of 2007. Despite the fact that I had lived overseas before, my mom was worried. When I hurt my ankle two days before my flight, she became extremely worried. Like any mother, she wanted frequent status updates.

The price of the number of cell phone calls it would have taken to appease her anxiety would have been astronomical. Fortunately, I had discovered Skype before my trip and set my mother up with a Skype account and a webcam.

Calls over the Internet are completely free, and calling landlines from my...