Participatory community network mapping can support collaborative sensemaking within and across communities and their surrounding stakeholder networks. We introduce the CommunitySensor methodology under construction. After summarizing earlier work, we show how the methodology uses a cyclical approach by adopting a Community Network Development Cycle that embeds a Community Network Sensemaking Cycle. We list some observations from practice about using community network mapping for making inter-communal sense. We discuss how extending the methodology with a pattern-driven approach benefits the building of bridges across networked communities, as well as the sharing of generalized lessons learnt. To this purpose, a community collaboration pattern language is essential. We show initial work in developing and using such a language by examining the cross-case evolution of core community network interaction patterns.