Magic Jack

As I have talked about before, we have gone to bare bones local only calling on our home line to save $50 a month on our internet/phone bill. We also have skype but I was thinking about trying Magic Jack and I have heard mostly good things about it. They have free calls in, long distance throughout the world and even voice mail all for about $20 a YEAR not month but YEAR. As soon as we do our taxes and get the money back...I am going to through out $20 for this and try it out and see what happens. But would really love to get some feedback from others that have used it.