Skype is so popular that in some circles people use the name of the service as a verb. Yet most people use Skype only for making free voice calls, and for conducting occasional video chats between far-flung relatives. That's a shame, because Skype is a powerful business tool. A Skype-powered videoconference can take the place of a business trip, saving you money on airfare, hotel, and car rental. And let’s not forget the free Skype-to-Skype calls you can make to overseas suppliers, clients, and other contacts.

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