Cellphones tap wisdom of the crowds


By Anil Ananthaswamy DAVID, a Masai herdsman from Kisumu in Kenya, answers a call on his cellphone. After listening to the message, he repeats a short phrase in his Masai dialect. He then listens to another short message, and repeats the new phrase. After 30 minutes, he ends the call, having earned enough for a week’s worth of personal cellphone airtime. David is working for txteagle, a service that allows rural Kenyans to earn airtime and money by performing small tasks such as translation and transcription using their cellphones. The service is based on crowd-sourcing,
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