You have to pay for it now? I've got it but dont use it, got on my nerves, it's like one of those things like IM that everyone feels they have to keep trying out, even if the've got fuck all to say to you.
You only have to pay for the feature of calling actual phones. Anastasia and I use it all the time to video chat since we only see each other every couple of months, it helps out immensely.