Is this the sequel to The Social Network? Facebook founder Mark Zuckerberg and Napster co-founder Sean Parker got into a row outside a Hollywood nightclub about Facebook’s role in Parker’s new music venture, Spotify. A witness told the New York Post that after launching Facebook’s deal with Spotify several weeks ago, the two went to party at The Beverly nightclub where “they spent a lot of money on alcohol” and got into a heated altercation. Parker reportedly argued that all Spotify users shouldn’t have to sign up to Facebook, but Zuckerberg wasn’t having it. “It was a full on screaming match… but stopped short at coming to blows.” Facebook has not commented on the alleged incident.