Isn't troll face was "cool face" before? I thought the original comic was not about troll at all, can't search it at work.
The original can be found on the linked site, but it's also on DA: http://whynne.deviantart.com/art/Comic-Trolls-98357844
From the description:
>It's trollface, not coolface, but call it what you like.
http://whynne.deviantart.com/art/Comic-Trolls-98357844?offse...
Cool face seemed to be posted first in 2008-12-01 and trollface somewhere in 2008.
But that doesn't matter that much since it was originally posted on 4chan and not DA.
Source : me and http://knowyourmeme.com/memes/trollface-coolface-problem