Yes, it's important the rating. But i have this observation: by deffault, at wincustomize, don't appears skins rating -3. Also, i uploaded some wallpapers (not very nice, but usefuls) rated at today 1 or 2; when are uploadeds, their rating are 0 and 1 at this wallp. This is normal? i don't know. It's a chance i don't like this wallp heheheh.
Also, the people are rated very high some of my objects, that really aren't beautiful or useful objects (ex. c-my computer). ANd others, more best than this, are rated as poor.
It's a way to know the useful of a icon-skin-object, the rating, but i think the people don't do this