by Andrew Tonner
In explaining telecom titan AT&T's recent decision to reinstitute unlimited data plans for some mobile subscribers, the famous P.T. Barnum quote came to mind: "Without promotion, something terrible happens ... nothing!"
At a time when competition among the largest four U.S. telecom companies
-- AT&T, Verizon Communications, Sprint, and T-Mobile -- is near a fever pitch, AT&T is leveraging one of its core strengths to steal share from its competitors in a manner few expected.
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