Expii uses voting (like Reddit, Quora, Stack Overflow, etc) to identify the best content. After that, since we have the luxury of focusing only on the "heavy-hitter" topics which at least 100 million people need to know, there really aren't that many topics. When we do reach the size at which quality is an issue, we can simply moderate the topics in-house.

Wikipedia cannot do this because their objective is to cover 100 million topics (breadth), and so in-house moderation doesn't scale. Our objective is depth: we ultimately want to provide the absolute best free interactive lessons on every heavy-hitter topic in the world. :)

Thanks for your well-wishes!