A computer data signal embodied in a carrier wave, said computer data signal having encoded thereon computer instructions which, when executed on a computer system, cause said computer system to provide open session based selective broadcasting in an instant messaging system, said program code comprising:
- program code for displaying, in an instant messaging session user interface for a first instant messaging session, a broadcast message command user interface object enabling a local user to send an instant message to participants in a plurality of currently open instant messaging sessions in which said local user is a participant.