Don't forget to make sure all Biblical topics are suitably screened. I can just imagine the furore at Ezekiel 23:19-21.
(go look it up, I'm not giving spoilers here.)
And here's an actual Bell Canada advertisement. These are the sort of minds the project will need to be suitable for:
http://www.torontopics.com/dark/HPIM0418.JPG
Closeup: http://www.livejournal.com/users/lillim/752633.html
I'm sure this fills you all with enthusiasm to get categorising! I can tell you, it sure does me.
- d.