Startup Idea : Bounty-based algorithmic problem solving

There are well-known algorithm contest sites like TopCoder or SPOJ. People post their solutions to well-defined problems and are judged by automatic tester program. Problems can also have programming language, time and memory constraints. How about similar site, but allowing companies and researchers to post their own (unsolved or barely solved) algorithmic problems (which have to be precisely defined, of course) with some kind of testing suite (something like unit tests, but maybe more complex) and specific language, time and memory constraints? Every such a problem will have defined some pre-paid bounty, which will go to the first programmer who will solve it (minus service fee, of course).