OntoMediate is a 2.5 year research project, funded by the UK Ministry of Defence as part of the Data and Information Fusion Defence Technology Centre (DIF DTC) initiative. The project focuses on the creation of information brokerage services that incorporate ontology mediation techniques as the basis for meaning-preserving modes of information exchange between diverse user communities. Part of the research effort associated with the project aims to explore the extent to which collaborative environments can be used to support the identification of inter-relationships between ontologies. Such an approach seeks to surmount traditional barriers to information exchange by providing a collaborative framework for the identification of ontology alignments and the active translation of information content. The ultimate goal of the project is to facilitate a common understanding of information content as a precursor to better modes of agent collaboration, communication and shared situation awareness.