Quote - Lot's of good suggestions in this thread, but I didn't see my particular pet peeve mentioned...

Thumbnails. I

I'll second that one! And even worse is when you get a pack of textures and you get NO THUMBNAILS! There's nothing worse than having to make PNGs for all the eye colors, etc in a texture pack you bought.

The other thing that irks me is that we are now on Poser 7 and people are still making stuff that is designed for Poser 4. I understand designing for the lowest common denominator, but I would hope that most Poser users are at least on 5 by now so can we please do away with the .bum file references! It is very unreasonable to expect vendors to keep making files that are compatible with software from four versions ago. How many software companies nowadays are designing for Windows 98? At least offer the Poser 4 version of your file AND a poser 5/6/7 version.