well, some reasons are given in http://RangeVoting.org/Why99.html
I don't much care what range you use, but there was some thought put into the question of what range was psychologically best... -- Warren D. Smith http://RangeVoting.org <-- add your endorsement and math.temple.edu/~wds/homepage/works.html ---- election-methods mailing list - see http://electorama.com/em for list info
