Are we decentralized yet?
This page measures the concentration of user data on the Fediverse and the Atmosphere according to the Herfindahl–Hirschman Index (HHI), an indicator from economics used to measure competition between firms in an industry. Mathematically, HHI is the sum of the squares of market shares of all servers. Values close to zero indicate perfectly competitive markets (eg. many servers, with users spread evenly), while values close to 10000 indicate highly concentrated monopolies (eg. most users on a si