Anyone use Skype?

Does Anyone use Skype? The program to make free calls anywhere in the world? Im thinking of downloading it but want to know what you guys think of it. You can download it here

Skype is fantastic depending on what you use it for.

I use it to call all over the place. It has lots of features. The voice clarity is awesome if you use headsets!

I dont use any of the pay services though, just pc to pc voice, free anywhere. So I can't comment on that.