Billboard has announced that they’re now factoring YouTube and Vevo on YouTube official music videos into their chart ranking system. That, along with digital download sales, is how the viral video “Harlem Shake” by producer Baauer has debuted at the top of Billboard’s Hot 100 and Streaming Songs chart this week. YouTube and Vevo on YouTube videos are considered streaming data, therefore, official music videos and user-uploaded content featuring authorized audio, along with digital track sales, physical single sales, terrestrial radio airplay, on-demand streaming, and online radio streaming, are factored to determine chart ranking on all of Billboard’s charts. This comes one year after Billboard and their partner Neilsen launched an On-Demand Songs chart incorporating streaming media from Spotify, Muve Music, Rhapsody, Slacker, Rdio and Xbox Music. Indie artists and unsigned acts better start promoting like crazy and maybe they can also end up debuting at the top of Billboard’s major charts.