[GIMP] Has anyone ever seen this?

Hey guys, I was looking at a portable app list for some free image editors and came across something called "GIMP". Have anyone ever heard of this? It is basically a free version of Photoshop and actually looks really interesting. I already installed it and plan on giving it a shot.

Check out what it's about:

Download Link Here

Yes I've used GIMP before it can often do what you want but the interface isn't as great as Photoshop for me.