OpenMicroBlogging is a deprecated communication protocol that allows different microblogging services to interoperate with each other. It lets the user of one service subscribe to statuses from a user of another service. This enables the creation of a federation of new communities, as an individual or organization of any size can host a service that supports the protocol. OpenMicroBlogging utilizes the OAuth and Yadis protocols and does not depend on any central authority.
OpenMicroBlogging has been superseded by an enhanced version of it, OStatus.