With cell-phone minutes being so cheap, Luddites wonder what the big deal is about making phone calls over the Internet or as geeks call it, VoIP, short for "voice over Internet protocol." The answer is that VoIP has the power to turn an Internet connection into a videophone. For the average user, Skype is the best VoIP, even though it is a "walled garden," meaning that in order to use the videophone feature, you have to convince your friend on the other end to join Skype too. Gmail users already have a videophone built into their e-mail app. Power users may want to check out Dim Dim.
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