The first one has TONS of downloads: fonts, hi-res stock images, dingbats, and brushes. There's also a YouTube video I uploaded earlier today on making Banksy style artwork, you can even download a hi-res version to save. Trust me, that's better.
The second one shows you how to create stencils in Photoshop from inage files & custom shapes - VERY handy for also making vector type graphics from most any image.
The third one is all about Banksy, 'nuff said.