On 9/29/06, Venkatesh Raghavan <venka.osgeo at gmail.com> wrote: ... > In situations like this, I feel that it would be best to > rely on "The Wisdom of Crowds" (ISBN 0-349-11707-1). For quick meta-access, this may help: http://en.wikipedia.org/wiki/The_Wisdom_of_Crowds Markus