Formalizing the debate

DebateGraph is an interesting site which allows debates on different topics to be formalized and viewed. I like the concept of this, which does bear some relation to the Engelbart vision of how networked computers would be used, although I think the actual execution in terms of usability needs more work (the explorer view doesn't seem to work on Linux, although other views are ok). An xml import/export function is also needed, so that debates could be visualised, analysed or refactored using different software.