Opinion Space is a new online discussion tool that uses data visualization and statistical analysis to give all participants an equal opportunity to have their opinions heard and to vote on the ideas of others.
S. Faridani, E. Bitton, K. Ryokai, K. Goldberg. Opinion Space: A Scalable Tool for Browsing Online Comments. ACM Conference on Human Factors in Computing Systems (CHI), 2010.
E. Bitton. A Spatial Model for Collaborative Filtering of Comments in an Online Discussion Forum. ACM Conference on Recommender Systems, 2009.
"Opinion is the medium between ignorance and knowledge."
-- Plato