Hey all! I am traveling to Canada later this spring. As we all know, CDMA isn't the best there, and where you can pick it up international roaming rates are very high. Thus my plan is to pretty much turn off my 3G radio and use wifi. I am wondering if there is an app that will let me place calls (and in an ideal world, receive calls) via wifi? Maybe skype or truphone? I don't think google voice fits the bill as it connects you through your existing line as I understand it. That saves $$ calling to international numbers but won't help me - I'll be calling US numbers from a location without cell service, effectively. Thanks in advance!