Mac has released FaceTime for Mac, making it simple to make video calls to your FaceTime contacts whether you’re using a Mac, iPhone, iPod touch, or even an iPad (unofficially for now — but I suspect we’ll be seeing an iPad with a camera soon enough).
FaceTime for Mac is available from the Mac App Store for $0.99. The app supports 720p video on Macs with Intel processors, as well as VGA video for Mac to Mac calls if you’ve only got a standard definition camera.
To use FaceTime for Mac, all you do is enter your Apple ID and click on any name in your Address Book to initiate a call.
… what’s the advantage of this over Skype or Apple’s own iChat AV that are already free?