About Debategraph: "Debategraph is: (1) A wiki debate visualization tool that lets you: * present the strongest case on any debate that matters to you; * openly engage the opposing arguments; * create and reshape debates, make new points, rate and filter the arguments; * monitor the evolution of debates via RSS feeds; and, * share and reuse the debates on and offline;(2) A web-based, creative commons project to increase the transparency and rigor of public debate everywhere—by making the collective insight and intelligence of the global community freely available to all and filtering out the noise."
A sample debate graph:
