Augur is unique, complex and will dwarf the size of all other decentralized prediction markets combined. It set crowd funding records, has a community orders of magnitude larger than Hivemind and Gnosis combined (based on Twitter and Reddit data) and will likely be the first to achieve scale.

People will come to Stack Exchange looking for "Augur" more often than they will come to Stack Exchange looking for "prediction markets". Which other prediction markets (if any) are on on topic should remain an open question to be decided by the community during beta. However the branding of this site should remain "Augur".