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In this paper, the problems facing designers of peer-to-peer instant messaging protocols, specifically those intended to run over mobile ad-hoc networks, are discussed. In particular, the challenges of identity management and presence dissemination are addressed, with an efficient and user-friendly protocol described that solves them. As a side effect, a form of social network mining is offered that allows users of the protocol to be introduced to unfamiliar members of their social network. Finally, a method of grafting a sort of multicast chat room functionality onto the protocol is discussed.