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The Rags-to-Riches Tale of How Jan Koum Built WhatsApp Into Facebook’s New $19 Billion Baby

Significantly, he and his mom came to the USA from Ukraine
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I only started using WhatsApp a couple of months ago, after a prospective CouchSurfing host in Jakarta asked me if I had it on my mobile. It’s an elegantly simple messaging app — as simple as sending a text, but without incurring your carrier’s SMS fees. Facebook just bought WhatsApp …