There’s no doubt to it — mobile e-commerce is on the rise, with an IDC report predicting that by 2017 purchases on mobile devices will exceed $1 trillion._And_Japanese e-commerce giant_Rakuten_knows this clearly, which is why it is keen to fold messaging and calling app Viber into its “key priority” — mobile commerce. Last month, Rakuten_announced that it was buying Viber for $900 million._As Rakuten launched its service officially in Singapore today, Shin Hasegawa, the global vice chief marketing officer, tells TNW that the company is “aggressively” working to integrate Viber into Rakuten. Mobile commerce is for sure a key priority...

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