(MLP stands for "mindless link propagation", stolen from kuro5hin. I'm going to put this in the subject line for posts where I'm just passing out URLs that I want you lot to read and consider in the context of possibilities for the OpenGuides software.)

Another one from Alex (yaxu):

http://www.uie.com/Articles/strategies_categories.htm

An examination of how different ways of organising categorised content can improve the usability of a site containing a large quantity of information.

Kake