FYI:
Check to make sure your area code is listed in there index. If not, anyone who calls your new MagicJack # will be charged for a long distance phone call. I found this out the hard way. They failed to mention this little fact. Other than that, it worked great for me as well, although I did not use it but once or twice. It would be great for some one who traveled alot...sadly that's not me.
http://www.magicjack.com/1/areacodes.asp
Ahh....I see they have added my area code....only 3 years later...better late than never....I just may have to give it another go.