Quote - Do poser people use those functions?

Some use displacement, some have yet to venture that far - it depends whether you want to reach the absolute maximum audience or not. Displacement won't work in early versions of Poser*, and I believe it works differently in DAZ|Studio (but that's just a matter of making alternative material settings if so). It's also worth noting that there's been some discussion about using Zbrush's 16 bit displacement maps in Poser. With a bit of node juggling in the material room, you can use the full map resolution (65,536 displacement levels) as opposed to only 8 bits (256 displacement levels). I can probably dig up the relevant discussion threads in the Poser forum if you can't find them.

As to what is an appropriate poly count, of course that depends on the model. A major scene element such as a ship or a city would naturally be expected to use more resources than a model of, say, a grain of rice. :) As the others have said, most of your potential customers will be able easily to handle a figure plus clothing - that much again shouldn't be too much of a strain.

• Below 5? Or below 6? I can't remember...