Well a style of art strictly speaking is not copyrightable, but I can see your point. The site doing this does include a link to the Shepard Fairey's work.
yeah i looked at his site and he hasn't said anything as of yet, but it has been operating for only a few days now so he may not have heard. I tend to agree from what little I have seen of his work.
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I think I'd be tickled.
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