I mean with things like cell phones and calling cards do you really find yourself using it that often? Obviously you have to be by WIFI and such. I'll be moving to Spain soon and was thinking of getting the microphone and such so I can call the friends and family back home. But alas, the computer does have a microphone, so I'm not sure how often I would be using it. Is the sound clear? Good signal? Etc etc? What's the best microphone to use?