I think that this is perfect.....and that the amount of people who uncopyright their art should stay in the minority. It's not a stupid thing to do. It's wonderful: other creative minds are allowed to take popular works and then modify them as they please. The not-so-wonderful part: money grubbing vultures will take said art and either make money off the original under the farce that it's their own, or modify it minutely to satisfy their consciousnesses, then take the profit. If only a moderate amount of people uncopyrighted their works, then there will be a pleasant balance.