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Free texts may snatch a chunk of wireless carriers' profits

At a time when e-mail and many other forms of electronic communication are essentially free, wireless carriers are still charging as much as 20 cents to send a text message to a phone, and another 20 cents to receive it. Paying so much to transmit a handful of words is starting to look as antiquated as buying stamps. There are now a growing number of ways to bypass text-message charges using an internet connection—much as Skype allows people to make calls without relying on a traditional telephone line. If these services catch on in a big way, analysts say, they could take a big bite ...