Yoomba, a Menlo Park, Calif.-based company that let users send and receive phone calls and instant messages through their email programs, has shut its doors, reports VentureWire — continuing the trend of VoIP consolidations and failures that has emptied a once crowded space (including still afloat Jajah and Broadsoft).
There was a fairly salient flaw in Yoomba’s business model — users could only call others who had downloaded the program, and its market share just wasn’t big enough to make it work.
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