I am trying to find a good VOIP application. I am not interested in something like skype where they charge you to call phone numbers. I looked at whistle and liked what they have to offer but the pre-recorded ads before each call will for sure become a pain in the a$$!!! Mainly this is what I am looking for. A voip app that lets you make unlimited calls to any numbers in the US. Also, an app that gives you your own number so others can call your Ipad. Last thing is, I travel alot so when I am out of the country, I want to be able to call and receive calls from any number in the US no matter where I am. Does something like this exist? I have been googling this and Whistle seems to be my best choice... Would love some feedback from those already using VOIP on ipad.