Please check out my new site. I hope you will see the usefulness of it and contribute. It is an experiment. It has barely begun, I have much research and questions that will soon find it's way to this site. Please add your questions, any questions, and fill in any answers you can.
This web site is based on the idea of a Wiki, anyone can edit and add to it. I have high hopes that it may become a good resource for rendering and lighting research. Give it a try..