flicker - 12:16 am on Aug 2, 2005 (gmt 0)
It really depends on how closely related the "topics" are, too. If these are articles on twelve different aspects of the same sort of business, we'd usually rather list it once in the highest-level category pertaining to that business. If these are articles on twelve radically different subjects, such as HTML programming, playing the clarinet, Swahili grammar, and children's theater, we'd probably be considering the sections separately. Somewhere in between... would be somewhere in between. I see that WebmasterWorld's Google, Apache, and HTML forums are deeplinked on the ODP, for example. They're related topics, but not THAT closely related, and they're extremely useful resources, so editors obviously decided it would add value to list them separately. Notice that they're NOT all listed in the same category, though. No matter how extensive and useful a website is, we avoid linking to it more than once from the same category; that would annoy precisely the kind of web searchers who use directories, if you think about it.