Voice-video calling app

Skype: Probably not a secret for most of us, Skype is being used by millions of people every day. I personally use it a lot to call my folks in Europe. I didn't put it on the blog so far because, for a long time Skype didn't support video calling using the front facing camera. Now you can use it for video calling and it works pretty well. Plus, when you call somebody else on Skype is free. Here's the link. From the phone simply search for "skype" and install.