Community Informatics is a wide-ranging field of inquiry and practice, with many paradigms, disciplines, and perspectives intersecting. Community Informatics research and practice build on several methodological pillars: contexts/values, cases, process/methodology, and systems. Socio-technical patterns and pattern languages are the glue that help connect these pillars. Patterns define relatively stable solutions to recurring problems at the right level of abstraction, which means that they are concrete enough to be useful, while also sufficiently abstract to be reusable. The goal of this paper is to outline a practical approach to improve CI research and practice through collaboration patterns. This approach should help to strengthen the analysis, design, implementation, and evaluation of socio-technical community systems. The methodology is illustrated with examples from the ESSENCE (E-Science/Sensemaking/Climate Change) community.