Vonage App: Call Facebook Friends for Free

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The inexorable march towards data-based phone calls proceeds with steady, clomping footsteps. Why pay for a separate voice plan, estimating the amount of time you might want to talk that month, when you're already paying for a set amount of data? Apps from Skype, as well as video apps like the iPhone's FaceTime and Android's Fring, use data, and Vonage looks to be next.

Vonage, of the annoying commercials, is a pioneer in VoIP (voice over IP) technology. Personally, I'm...