How this selfie-enhancing chatbot harnessed empathy to grow like crazy

GUEST: Messaging apps draw more users than smartphone games, utilities, and even the most popular social networking apps.
That’s exciting news for chatbot companies that want to build something instantly relevant and useful to millions — that is, you know the user base already exists, and it’s ready and waiting. But how do you get their attention in a way that’s meaningful? There are no well-established “bot store” corollaries to the App Store — where ev