Ring Central
Fast-expanding hosted VoIP provider RingCentral nabbed $10 million in Series D funding in September, but the real story is its year-old channel program, which is expected to contribute to as much as 15 percent of RingCentral's overall revenue in 2011. If that's true, RingCentral's doing something right, seeing as its channel presence has been more or less nonexistent since its 2003 founding.
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