A few people have researched Turker demographics: http://behind-the-enemy-lines.blogspot.com/2008/03/mechanical-turk-demographics.html http://behind-the-enemy-

A few people have researched Turker demographics: http://behind-the-enemy-lines.blogspot.com/2008/03/mechanical-turk-demographics.html http://behind-the-enemy-lines.blogspot.com/2008/03/mechanica... http://behind-the-enemy-lines.blogspot.com/2008/03/why-people-participate-on-mechanical.html http://behind-the-enemy-lines.blogspot.com/2008/03/why-peopl... http://waxy.org/2008/11/the_faces_of_mechanical_turk/ http://waxy.org/2008/11/the_faces_of_mechanical_turk/ There may be others. Those are just what I had saved in my bookmarks.