As in Slack there is just one conversation group, namely Channel. Ryver has 'Open Forum' and 'Private Team'. Which does incline you for a team to start a 'private team'. But then again, it is better to have as much open communication as possible.
But anyway, why not integrate OpenForum and PrivateTeam into one group. As the only difference is whether the group is open or closed. It could be called 'Forum' for example.
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