So now there is debatepedia. Where strong arguments are cooperatively produced - or as the Future of the Book project calls it, "an encyclopedia of arguments." Want to know the arguments for and against the repeal of the U.S. Estate Tax? Here you go. Have some information or analysis to add to a debate on abolishing intellectual property rights - add them here.
What a wonderful tool for drawing in collective intelligence on the challenges and opportunities that philanthropy aims to address. Have information on building sustainable social justice enterprises? Strategies to better educate children? Delivery mechanisms for health care in rural communities? Looking at data from different vantage points, encouraging debate and considering alternative explanations should be a key part of making decisions about billions of dollars. Debatepedia shows that it can be done in an informed and gracious way (sort of like the debate on the Stern Review that the NY Times covered on Wednesday in the Economix column.)
Outline your argument, define success, encourage alternative view points to be aired and shared, and inform your decision and grant making. Cool.