Madonna has tried to conqure file swapping in one fell swoop!. A following quote from the page:

…in a vain attempt to stop P2P users swapping songs from Madonna’s ‘American Life’ album, the lady herself released a series of ‘dummy’ files onto KaZaA. these are full length files but only the first few seconds contain sound, a recording of Madonna saying ‘What the fuck do you think you’re doing?’. presumably this was supposed to inspire guilt and repentant hearts in the sinful ‘thieves’… but instead it seems to have been counterproductive… such a perfect sample is just crying out to be remixed!…

Honestly I have no idea why in the world Madonna thought this would discourage people from downloading her new songs, but I guess she only thinks the best of people???