SK Telecom are sponsoring art for mobiles, letting users download and display masterpieces as wallpapers.

This seems to be an area which has been massively under-exploited to date; we've been in vague discussion with a client to try and get them doing something along these lines (and then heading off in a slightly different direction, of course ;)).

No-one "owns" art on mobile, in the way that various companies are trying to "own" gaming, or music.