I have skype, but you can only make/receive calls via email for free. You have to pay for calling phone numbers (like a cell phone). Now I have Talkatone on my ipad that I can call/receive/text any number (phone/cell phone) in us and canada free. It's big difference!
Not so true: when you use mac with internet connection (wire or wireless), you can setup google voice to make/receive calls through home phone (or cell phone?) as well as text by mac; no TaT needed. I think a big advantage from TaT is that using it with ipad makes ipad become a virtual wireless cell phone (for free)....That is the only bad thing; you gotta be connected to wireless...