Moral Responses and Moral Theory  
   On the metaethical role of psychological reactions, specifically emotions.
   http://www.inform.umd.edu/PHIL/faculty/PGreenspan/Res/soc.html

A Bibliography of Metaethics  
   Compiled by James Lenman at the University of Glasgow, UK.
   http://www.gla.ac.uk/Acad/Philosophy/Lenman/bib.html

Evolution and Philosophy  
   Introduces Metaethical Functionalism and explores other implications of evolutionary theory for philosophy. Online papers, discussion, polls, and links.
   http://ourworld.compuserve.com/homepages/KVC/evolphi.htm

Reflective Equilibrium  
   The result of a process of reflection on an area of (moral) inquiry, a notion figuring prominently in Rawls' Theory of Justice; from the Stanford Encyclopedia by Norman Daniels.
   http://plato.stanford.edu/entries/reflective-equilibrium/