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I signed up for the beta but haven't heard back. It seems like a great app/service. I would love to have 2nd number attached to my iPhone that I can use for business and turn off on the weekends.

Newber seems to have a lot of great features, although I wish it also had the ability to do VOIP over wifi.
 
They charge 2 cents for every minute. Not sure they will have a good market. Who wants to pay for the call every minute on top of their cell phone plan or landline plan? I don't think it is a good business model.
 
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