What if every second line in the country is a cell phone -- and if people do a lot of their long distance calling on the second line?

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Stevens says Verizon and many carriers in Asia have embraced Skype, however, because they realize the service can increase customer loyalty and the amount consumers spend on mobile data plans even if it dents their long distance calling business.

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Skype is well known for its low-cost, long-distance calling rates, and makes a good chunk of its revenue from international calls to landlines and cellphones.

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And while many mobile services don't come with international calling, using the Skype service you can make international calls without paying hefty long distance fees, although there will be Internet telephony charges.

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