“The Amazon Echo is an unlikely hit. After all, the world’s largest online retailer hasn’t always won its bets on hardware. (RIP, Fire Phone.) And a gadget that relies solely on voice? Let’s just say Siri hasn’t inspired confidence. Yet Amazon has by one estimate sold some 3 million of the squat cylinders since the Echo launched in November, 2014. And this month the Echo surpassed more than 1,000 “skills,” or apps, after the company opened up the software developer kit last spring.” Read more at Wired.