My pet hate is multiple ego folders for one vendor because his three products create "Joe Blow", Joe_Blow" and "!Joe Blow" folders.

Quote - When I name my files, I always capitalize the first letter of each word accept for the first (usually). It makes it easy to read without spaces. 

I tend to do the same. I also try to keep filenames as short as legibility allows so that the whole filename will always display. I often come across names that are so long that the last part (usually the important bit) isn't visible in certain viewports and you can't see the difference between things like:

"Cool Special Occasion Outfit For Victoria 4 - Blouse.cr2"

"Cool Special Occasion Outfit For Victoria 4 - pants.cr2"

because they both show up as "Cool Special Occasion Outfit F..."

Quote - Consistency – It may be the hobgoblin of little minds, but when the product has one folder name in the Character folder, a slightly different one in the Material folder and a third variation in the Pose folder, you go directly to my DO NOT BUY FROM list. 

The trouble is that there's no single, central "Best Practice" guide on this stuff. If you are trying to figure out how to do it and you look at 10 examples in your own runtime you'll find 10 different ways, most of them flawed.

I think Poser itself started the rot with stock content folder naming that was all over the place and no naming consistency at all between the various cr2, obj and texture files which made up a figure. Even the library structure displays "Figures" and "Expressions" but the folder structure behind that calls them "Character" and "Face" (and there's another unconnected "Figures" and "Head" folder in the runtime).