There is a new forum group for Sustainable (Green) Design under the AEC heading.
There are new forums for Autodesk Green Building Studio, Autodesk Ecotect and Green Pastures.
This forum (the one this post is in) is focused on Revit AND sustainable design issues/software integration. It was not created with a specific focus on other software in mind. If you have a question about Revit and how it might be used for sustainable design then this is the place.
If you want to find out how Green Building Studio works or figure out why something is not working then these new forums are for such questions. I realize there is some overlap and if it gets too confusing perhaps we'll expand on the sustainability group to include interoperability discussions.
We'll figure it out as it develops and we'll be listening to your suggestions to make it work for you, the members!