Most researchers nowadays are judged based on their publication list and ---as a shortcut--- quantifically rated by their cumulative Impact Factor. How efficient is this method?
This paper studies the assumptions underlying the journals' impact factor and the open access initiative:
M. Taylor, P. Perakakis, Varvara Trachana. The siege of science , URL . Ethics in Science and Environmental Politics, 8(1):17--40, 2008 .