Mark Brooks: I'm very impressed with the Skype calling service of late. The sound quality is very strong. Especially skype to skype calls. The screen sharing functionality is a welcome addition. And now that I'm able to call out and show a number in people's caller id, I'm using Skype almost as my primary calling service. If only they would integrate Phonetag.com services and some of Toktumi and RingCentral features.