Although we have our own Forum for IRender nXt:
http://nxt.accurender.com/forums/146.aspx
I think many SketchUp users would prefer to post all their SketchUp related questions at a single forum. I was hoping that SCF wanted to be just that - a place for all questions relating to SketchUp - (SketchUp itself, 3D Warehouse, COntent providers, Ruby and other extensions, Renderers, other apps, etc.)
By making the add-ons section more flexible (i.e. a sub-forum for any add-on which requests it), we would make it easier for users to post their questions to the proper sub-forum, to read questions about the add-on, and to subscribe to questions about the add-on)