I note that reddit and stack exchange have both tags and groups. (Reddit tags are hacked on, but e.g. askreddit has “serious”, used for setting different rules; dating subs have x4y, used for filtering.)
I don’t want to draw any strong conclusions from this, but I think it hints that if you have subgroups, you’re still likely to want tags. (Not that you denied this.)
I note that reddit and stack exchange have both tags and groups. (Reddit tags are hacked on, but e.g. askreddit has “serious”, used for setting different rules; dating subs have x4y, used for filtering.)
I don’t want to draw any strong conclusions from this, but I think it hints that if you have subgroups, you’re still likely to want tags. (Not that you denied this.)