This is a prototype. The goal is to design a site that encourages people to answer questions about themselves (personality, lifestyle, health, etc).
The idea is to build something where people find it fun/rewarding to share data - either because they get interesting results, or they understand this can help others. If we collect enough data from enough people, we can use it to tell people things that help them better their lives. You can see some results from what we've collected so far here.