As one might guess from my background as a political scientist and a lexicographer, I am interested in tools that help to clarify arguments. This group rightly gives prominence to tools for making arguments explicit, so they can be developed by a group. When there are disagreements, they may be because people disagree about the quality or relevance of data, or they may have different perspectives on the problem, resulting in use of different words and different meanings for common words.
One of the tools I have been most interested in is WebGrid, developed by Brian Gaines and Mildred Shaw at the University of Calgary. (http://pages.cpsc.ucalgary.ca/~gaines/WebGrid/
) It is a tool for knowledge acquisition, based on eliciting an object-attribute grid from an expert. It also has a component called Sociogrid that provides comparisons among experts' constructs (concepts). This allows people to clarify whether a dispute may be rooted in terminological differences, or conceptual differences that can be clarified in dialogue.
If this approach to organizing dialogue is of interest at some point in the development of this group's deliberations on tools and dialogue processes, I'd be happy to participate and help in whatever way I can.