Eminem's song publisher is suing Facebook and its ad agency, claiming they infringed the Detroit rapper's copyright. In the complaint, filed in Detroit federal court, Ferndale, Mich.-based Eight Mile Style contends that a Facebook ad that was broadcast online April 4 copied music from Eminem's 2000 song Under the Influence. The 30-second ad, dubbed Airplane, was featured in a webcast by Facebook chief Mark Zuckerberg to announce Facebook Home, an interface for Android phones. Some viewers at the time noted a similarity between the ad's music and Eminem's song.