Disney is stuck by the law here. If they don't go after every user of one of their copyrighted images, that image can pass into the public domain because they obviously didn't consider it important enough to protect. Therefore, they absolutely have to go after every user of their images. The press knows this, but they still enjoy twitting Disney every time it happens. I have no great love for the Disney, but have to admit they are actually following the intent of the law. Heck, they would probably save money if the law allowed them to overlook really minor infringers without risk of losing their intellectual property rights. That army of lawyers they have to maintain couldn't be cheap.