Hello, I am going to start teaching a 3d modeling class which is a bit technology heavy. It is a 3d modeling and rendering class for sophomores in college. I want to set up some sort of forum or user group for the class online so that they can post problems and have either their teachers or other students post repliess, helping each other pick up the software (which can be very frustrating) more quicky. I was wondering what you guys recommended for an online user group or forum Yahoo groups? Google groups? Facebook groups? How do they compare? thanks, r.