A method and system is provided to enhance user presence management to enable the federation of rich media sessions. The method is implemented on a system and includes a presence manager server receiving a notification of user activity of one or more users taking place on one or more participating ecosystem sites in a participant ecosystem. The method further includes processing the user activity of the one or more users based on preferences of the one or more participating ecosystem sites established during a registration process and stored in a preference repository. The method further includes sending a notification of the user activity of the one or more users to the one or more participating ecosystem sites in the participant ecosystem to enable the participating ecosystem sites to at least one of communicate the user activity of the one or more users to one or more users and maintain a session of the one or more users.