On Thursday, Anonymous, a "hacktivist" collective, took down multiple U.S. Department of Justice, FBI, and entertainment company websites. They did this in retaliation of the FBI shutting down MegaUpload under the new SOPA legislation. It really doesn't sound like Anonymous did anything that crippling though, they used some online tool to direct tons of traffic to the target websites that effectively crashed their servers. This seems to be just a temporary problem though, and many of the sites are back up and running now. The tool they used is the Low Orbit Ion Cannon, or LOIC. Anonymous was quoted tweeting this as well, "We, Anonymous, are launching our largest attack ever on government and music industry sites. Lulz," and, "The FBI didn't think they would get away with this did they? They should have expected us." Sounds like Anonymous takes their piracy pretty seriously. MegaUpload has made more than $175 million in illegal profits from advertising on the site and the sale of premium memberships.