Company debuts premium pay service as it attempts to generate revenue from a percentage of its heavy users.
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VoIP startup says its user base has increased by a factor of 10 in five months so it needs help supporting its users and driving revenue.
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Internet phone company gets fuzzy reception after raising $531 million in its IPO.
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VoIP upstart gains new funding and access to Asian markets and technology.
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The money-losing Internet phone upstart seeks to go public and replaces its CEO.
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