We use tags in 2 configurations, Essences and Trees.
Essences are similar to breadcrumbs, but not required to be hierarchical. We use Essences as a form of Table of Content, or TOC, sinc ethey tend to show different narratives. Essence can be applied to many things: a tree, branch, link, content type and images. Essences also link things sharing the same set of tags.
Trees are composed of branches with a hierarchical set of tags. In a Data context, they’re called Nodes, in rendered form, they are called Links. Each link can appear in multiple branches, but in different spots within a branch. This can happen in conventional trees too, but in Simili, each link has a unique context both by tags they appear with and by what posts associated with them.