. My friend is thinking of getting iMac 21.5" i5 with Skype service. She would like to obtain this combo to communicate with both other iMac systems and Windows x systems. And, she isn't too sure of Skype Free Service or Skype Premium service. Since I don't use Skype myself, I cannot accurately provide pros / cons of this configuration. Appreciate your feedback on this combo. Especially Skype with iMac usage lessons learned. thanks.