I've been using this program awhile now.
I've noticed that no one has been updating this section for a while now.
I'll show you something neat. It really serves no purpose but here goes anyway...
This is the Main Character from Magna Carta, a Ps2 game soon to be having a sequel for the Xbox360. Viva la Revolution! Behold his femininity.
I am sure that you all already know what layers are and what 'blending' is. But have you ever blended a layer of an image on top of itself? With slight changes, the results can be interesting. Check this out...

Lookie there! I took all his coloring and shading away just like that! It took less than 30 seconds. Just alot of clicking really fast I geuss, and knowing what is where and how to do it.
The first on the left is the image as was. I then dilated the edges a few times then appplied a median filter to the next one. It looks weird and blurry now. But it was only the 'top layer.
I blended them to together using Difference Mode and the third one turns out. It turns it black, with the darkest regions of the bottom layer showing through the top layers colors. The top layer had no outline anymore, so the bottom show through in this fashion. It is sorta neat I geuss.
My brother is making love to his girlfriend in a nearby room right now as I speak and I am embarrassed and I want you to be too. I should listen to my MP3 player. Yeah, good idea.
Anyway, I finally merged the two layers, greyscaled them (made them black and white) then inverted the whole thing into what can be seen on the right. It looks like a pencil drawing almost. I could add a manga affect to give it a very intersting look but it takes time and imagination.
I am pretty sure that these trick has no use to anybody at all whatsoever. Perhaps I'll take the time to inroduce the more usefuls ones at a later time. Drop a comment and I'll see what I can do.
As we heed our final call
Flames that burn bright as a star
Deadly Angels fire thrall
Blaze an end to all we are