Vonage introduces "Vonage Mobile application for Facebook" that allows users to make free mobile calls to all of their Facebook friends who've the app, anywhere in the world, directly from their friends list, with a single touch. The downloadable app is free to get and free to use. The new service enhances the ability to connect with Facebook friends through voice calling. It's available for iPhone, iPod touch and Android devices. And the service works over Wi-Fi and 3G /4G networks in most countries.
The app works with a user's existing community of Facebook friends, so there's no need to remember screen names or to input numbers. The app eliminates dialing – users can just click on a friend and start talking. When placing a call, the friend's profile picture and status update display on the screen.
More Info: Vonage Mobile for Facebook