How do I create this aged/faded texture?

http://dribbble.com/shots/1214645-Give?list=following

So, I have been trying to figure out how this designer, Nathan Yoder, creates this texture with his designs. I know that he does most of his work by hand so it seems to me that this stipple shading and grunge texture is also done by hand. Nevertheless, I am looking for some way to replicate this texture. Anyone have some thoughts? Should I be looking for noise brushes, splatter brushes, stick to stipple shading by hand, etc? I need some help because this is driving me nuts!