Because we’re doing something good for the world, we should also do it for free -- that’s the strange perception of the world, if you’re doing something good for the world, you shouldn’t make money on it. Just like directors of NGOs or charities; they shouldn’t make money. But tomorrow if I designed an app that gave you funny eyebrows and it went crazy and everyone was sharing it and I made a billion dollars on an app that gave you a funny-looking face, everyone would pat me on the back and say congrats. But if you’re doing something incredible, people are dubious.