A project called PropertyGames asks some interesting questions by making "visual mashups" from photos of street art, and then selling these on shirts, hats, and other products. A very interesting conversation about the conceptual backing is included on the site in a chat with Sal Randolph, who we first heard about via the wonderful OpSound project. The density of interesting ideas and links is staggering, to the extent that one wishes one was present at the chat session.
One interesting comment Sal makes in the discussion is:
Well, I think you're really part of the illegal art/detritus community with this project rather than the cc copyleft world
copyleft = giving
and
mashups = stealing ?
perhaps, but
Detritus = the cycle of giving and taking that is culture.
CC world = giving away within the frames of sometimes rigid restrictions ("non-commercial" etc, whatever that mean), instantly blaming detritus culture that breaks those frames
(maybe)