Swahili continues to creep into the language of global finance, m-pesa, a thriving money-transfer system run by Safari-corn, a Kenyan mobile-phone operator, and named after the word for "cash", has already entered the lexicon. Having persuaded millions of Kenyans to send cash through an sms network, Safaricom is now trying to tempt them into a savings-and-loans service called M-Shwari, after the Swahili for "cool" or "calm".
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