Carl T. Bergstrom - Signalling Theory and Animal Communication: On-line tutorial on signalling in economics and animal communication.
Evolution of cooperation: This site presents a chapter on the evolution of cooperation in the ambitious book "Evolution's Arrow" by John Stewart.
Evolutionary Dynamics Bibliography: Contains many references on evolutionary game theory
Evolutionary Papers: Selection of papers on Evolutionary Economics by Ulrich Witt.
Gintis, Herbert: Full-text papers and class material covering game theory, the rational actor model in economic theory, experimental economics and anthropology.