B3ta served DMCA notice for Photoshop Prince challenge | The Register

"A number of users of b3ta.com have been slapped with DMCA notifications after posting images that poke fun at the pint-sized popstar's ongoing crusade to rid the internet of unauthorised Prince material."

Note: the DMCA is an American law and b3ta.com is a British website. Prince is also going after The Pirate Bay, which is in Sweden.