It’s a great group. I learned a lot from the other members and I have learned a lot more since joining. The group is one of the most knowledgeable in the world so I try to keep up with the latest tutorials and discussions.
You have to be a member to participate.
To me it seems like group by is just a way to give people different groups to work in. It’s a way to group people into different groups depending on what they want to accomplish.