and additional table CATEGORICAL-TOPIC for wcms DB itself....
the idea of 'categorical topics' might be viewed similar to categories
...(categories are generally reserved for wcms's structure of content itself)
the idea of CATEGORICAL-TOPIC allows
a given article to be mapped to MULTIPLE CATEGORICAL-TOPICS
much like blogs do this... a semantic feature of cross referencing
in this blog (subtraction.com) the use of the select box called 'categories'
is similar to the concept I have here of CATEGORICAL-TOPIC:
http://www.subtraction.com/
CATEGORICAL-TOPIC raises questions:
(1) How would this be incorporated - (as a module most likely?) and
(2) How would this be incorporated within the edit article interface - (a multiple select option? - core only?)
(3) Do you think of this as a useful idea and addition to wcms?
cheers,
john

ps: i guess this is hinting at something different from keywords -
rather categorical topics would be a centralized repository for site wide cross referencing
ie: ethics, economics, sustainability - basically broad notions that could be queried by wcms...
... different from keywords....