Sure, if you need to cut through categories use tags.
We should consider allowing you to “pass tags” through from WordPress we have a strong use case for this on boingboing.net
For example:
has the tags “edits riker star trek weird” it would be cool if
If they'd given Commander Riker his own Star Trek spinoff show, it would not be as good as this - boing - Boing Boing BBS had these tags as well.