Hi
On our install of Discourse we have set mainly Unique Tags in Categories. Some tags are used across Categories.
In our case for Example cross category tags like: Review, Youtube, Article, Français and Espãnol (Language Tags in this case 2 as we have a fair number of French and Spanish users. Some of our members provide Translations for non native English members).
Our site is primarily a VR Tech site. Tags as others have mentioned can be set to have a number of Mandatory Tags.
Educating your members on use can help immensely.
We’re still fetching out our layout. But it is progressing nicely.
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