retroworks writes: According to a recent tweet from the #OpParis account, Anonymous are delivering on their threat to hack Isis, and are now flooding all pro-Isis hastags with the grandfather of all 2007 memes — Rick Astley's "Never Gonna Give You Up" music video. Whenever a targeted Isis account tries to spread a message, the topic will instead be flooded with countless videos of Rick Astley circa 1987. Not all are praising Anonymous methods, however. While Metro UK reports that the attacks have been successful, finding and shutting down 5,500 Twitter accounts, the article also indicates that professional security agencies have seen sources they monitor shut down. Rick Astley drowns out intelligence as well as recruitment.