Megaupload, the file-sharing website shut down Thursday by the U.S. government, is a Web hosting tool that's accused of being an online haven for digital pirates.
Apple has a long way to go -- and logistical hurdles to clear in tens of thousands of schools -- before it dominates K-12 classrooms the way it has done the music industry.
Most of the websites shutdown by a hackers group were up and running early Friday including the U.S. Department of Justice, FBI and some entertainment sites targeted after one of the federal government's largest anti-piracy crackdowns.