UX Goal: Fewer decisions, fewer risks

Why do some consumer social products finally make it big after a series of misses? It's the UX details — particularly, those that help people make fewer decisions and take fewer risks. 

The more opinionated an app is about how it should be used, the easier it is for users to act without fear of rejection. Products benefit from giving people the plausible deniability to say: “I’m not seeking attention, I’m just doing what this app tells me to do!”