That would be nearly impossible in my opinion without see the existing listings within each category. Meaning he could could post a structure and it doesn't do any good to create an empty shell. There are enough of those types of directories already out there...hehe
For instance he may not need to break down a category even if it was Shopping if he only has 15 listings in there. It works the other way and he may have to break down into Shopping >> Home and Garden >>Furnishings >> Dining Room or the site may dictate United Kingdom >>Shopping >> Home and Garden >>Furnishings >> Dining Room >> Contemporary as it all depends on how large the directory really is (number of listings). The number of listings dictates the extent of the taxonomy and that is why it should/will always evolve on a site. Users don't want to scroll through 100's of "uncategorized" Shopping sites no more than they want to click 12 times through barren categories to find zero or one listing way down deep.
[edited by: The_Contractor at 9:39 pm (utc) on July 31, 2007]