Apple Thoughts: Can Your Mac Send and Received HD Calls Via FaceTime?

"Apple has published a list of Macs that support sending and receiving HD calls through its new FaceTime for Mac software, clarifying who can do what."

Bottom line on all of this is that if you don't have one of the new MacBook Pros introduced last week then you cannot send AND receive an HD FaceTime call. Many Macs can receive them, and most can send and receive the normal SD FaceTime calls. Apple has an article with more on this topic here.