I do like Skype. It’s free and it works very well. Kat introduced me to it years ago, and we talked for free, with amazing sound quality, when she studied in Bologna years ago. I use it all day for instant messaging at work, and it works flawlessly for that.
But when it doesn’t work, it’s terrible. I just participated in a large conference call which the presenter was using Skype for voice. We couldn’t hear a thing! Actually, we heard every other word or so, which was almost worse.
The lesson here is to use and enjoy Skype for what it does well, and don’t count on it in settings in which voice quality matters!