Thanks for the suggestions Caroline. I'll check out the packages you pointed me to.
I guess these are really two separate issues:
1) Demographics - some standard demographics used to be handled by the table users_demographics. Grepping around in the 5.0.2 code, I found references to this table in the ad_user_class_query procedure in ad-procs.tcl, although I didn't find any other matches. I would like to extend the user information to include more complete personal information.
2) User Interests - this used to be handled by the "categories" and "users_interests" tables. It allowed you to create a hierarchy of categories and subcategories, and then you could track user interest levels in the different subject areas. This was used on photo.net, and although it was simplistic it did work. However, at the moment I just need the ability to set up a flat list of topics and be able to assign (or have the user select) areas of interest.
