It’s rare to find a company in Silicon Valley that refuses to turn its users’ information into advertising revenue. Google, Microsoft, and Twitter all do it – the last few years have been an arms race to see who can delve deeper into your life to get you to part with your money. But the founders of WhatsApp, a smartphone messaging service that is wildly popular around the world, proudly declared they would never make their users the product. They built their brand off of this guiding philosophy and used it to differentiate themselves in a crowded market. It appears