Welcome to the Radiosity forum.
Radiosity rendering have been a solid feature in A:M since version 10 with the implementation of the Photon Mapping renderer and we would like to see more users use that feature.
This forum is the place where we can discuss radiosity and Photon Mapping in A:M and also any lighting techniques such as light arrays, skylights, any things related to lights setup and parametering. The goal is to diffuse all the information that a user might need to produce nice rendering with stunning lightings.
For you, this is the place where you can ask your questions and get answers, and post your radiosity renders and have feedback as to ways to improve the render.
For me, this is the place where I can gather all the questions, answers, solutions and clever tricks together. Where I hope I can figure, from your questions and difficulties, how I could improve the Photon Mapping user interface and make it more intuitive. Where I can get a feeling of what sort of tutorial I could put together that will best help new users of radiosity.