It’s a great library. We’ve been using it for our level “Kill House”
http://forum.unity3d.com/viewtopic.php?p=81597#81597
Nice tip!
I just poked around and had a quick peek at the tutorials, and they looked good too. A good place to start when trying understand basic texture editing like blending and tiling.
The License Agreement for the library looked good for royalty free use in distributable games too.
You may also look here for more links to all kind of recources:
Cheers!
Frank
Not actually a texture site, but an amazing source for images:
http://www.imageafter.com/