Q. Does Skype work on an iPad for video calls, and, if so, does it have any advantages over Apple’s FaceTime system?
One of the biggest advantages Skype has over Apple’s FaceTime app is that you can make audio and video calls to other Skype users around the world on more types of hardware. This includes calling Windows and Mac computers, Android devices, Windows Phone handsets and even certain Skype-enabled televisions and Blu-ray players. Skype-to-Skype calls are free, and for a bit of money, you can call regular telephone numbers.
Read more about the Skype vs. FaceTime debate at The New York Times.