UVMapper (Seems way to product specific and that is not to have a go at the product, but think rather than making a whole forum for it, as im not even sure how many people are actually able to provide help for it. It might be better to make a place for free tools like UVmapper, Gimp etc. so people can go one place and quickly get a good overview of different programs that might be useful.)

I agree. Remove this forum, move it from "Software" to "Topics", and replace it with "UV Mapping and unwrapping programs and tips" It would include stuff like UV Mapper, Pegasus, UV unwrapping in Hexagon, UV unwrapping in Blender, general tips for any program, etc.

Z-brush (Seems to only be the moderator posting there and honestly there are some very good forums for Z-brush already. And think most people use it in collaboration with Poser/Daz, so they seem to post in those forums anyway. But for anyone modelling "fresh" content i doubt this is the first place the go.)

Perhaps send it to Topics like above and replace it with a "3D Sculpting" board. Probably won't make a difference, but you never know.

Texturing (Seems to be done in program specific forums anyway) There are programs that do not have their own forums, such as Neo Texture Edit and Mapzone. (Which reminds me, I need to remake my Stand-Alone useful 3D and 3D related program freebies list on the Daz forums.)