forwarding a reply which somehow did not come through to this list, from a long-time listmember:
Can I get a list of all the articles in category A and C, in one list?
My response is a bit late. What you want is a AND function of categories. That is possible. OR functions are also possible, and summery of content etc. My company needed that functionality to. Gabriel Wicke did write some Open Source code "catfeed" I needed additional functionality, paid for it, Gabriel did develope futher. I agreed that my paid additions for this specific extension is also Open Source. So you are free to use it. See http://manual.wikiation.nl/Level_3_mediawiki_extension_catfeed for the documentation and you can play with it on http://experimenteer.wikiation.nl (login and change your preference language to English may be easy for you.) This is an experimental wiki so do not be afraid you destroy something. Localization has to be completed, and some minor changes.
Just an idea as an possible alternative.
Bernard Hulsman
*end of forward* all the best, oscar [[m:User:Oscar]]