(See Wiki Categories)
A wiki tag should help implement the mechanics which make wiki work. They are the little bits of Self Organizing principles which make wiki neat.
This is the Reverse Index for the pages which define a Wiki Tag. (But not for Wiki Categories.)
Some Wiki Tags are actually like the children's game of tag: Tag, you're it, and then you have to do something to get rid of the tag.
subcategory of Category Wiki
See original on c2.com 