Just something I've noticed, recently.
Skinning: 16 (95%)
>skin corpse
Your lack of experience with skinning this creature proves true as you damage the ghoul corpse beyond the ability to skin it.
[Roundtime: 8 seconds]
Skinning: 17 (9%)
Two weird things, here.
1. Each attempt at skinning gets me 14%. That seems like a lot more than I was getting, and a lot more than any other skilll gives me as far as I know.
2. There was no message saying I had obtained the rank.
A little more testing shows that actually getting a ghoul skin nets me ~2%
Just thought I'd mention this as it seems a bit 'off', to me.
-Chris