Anyone Use Magic Jack?

I was wondering if anyone here uses magic jack. I thought it might be good to use as a business line to talk to cpa managers on if it is actually good as they say it is.

I use it and it works great for me. For the price it is a great deal. You get your own number and voice mail which is cool plus it works anywhere and on any computer. It saves me tons of money on my cell because I have thousands of roll over mins now because I use it when I'm home.