Previously, this unlock service was available only through the carrier's retail outlets, online chat support or by dialing 611.

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In February, SNX acquired Link2Support, a provider of voice, e-mail and online chat technical support.

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While many patients now seek support through online chat rooms, face-to-face groups have the advantage of "the warmth and closeness that can develop when people interact on a personal level, " says Ruth Diab Lederer, a program manager at the American Brain Tumor Association.

WSJ: Giving More Support to Support-Group Leaders

One blogger, Max Woolf, described his exchange with the company's support service, posting a screenshot of an online chat in which he was told that users would be punished for multiple uses of the coupon.

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