Vonage vs. Skype

I am going to using a lot of long distance calls while sitting at my computer and need unlimited long distance. I really don’t want to change my existing phone service, just add this. It seems like Skype is a lot cheaper than Vonage. Does anyone know of any disadvantages to Skype vs. Vonage?

Have you looked into Magic Jack? I love Vonage but have been doing research on switching over to Magic Jack. A friend has it and I’m just waiting for him to use it a couple of months before I switch.

Otherwise, as I said, Vonage is great.