Metallica, Sworn Enemy of Music-Sharing Technology, Finally Joins Spotify

SAN FRANCISCO, CA - DECEMBER 9: James Hetfield (L) and Robert Trujillo of Metallica perform during day three of the band's 30th Anniversary shows at The Fillmore on December 9, 2011 in San Francisco, California. (Photo by Tim Mosenfelder/WireImage) Photo: Chris Weeks/2010 Getty Images

The members of Metallica are arguably the world's most renowned opponents of online music sharing, having gone after Napster for $10 million in 2000. Now they've finally come around and added all their HEYYY-AHHHH-filled music to Spotify. (Incidentally, the service currently stands at 20 million worldwide users, jumping 33 percent in the last half-year.) At a Thursday press conference, joined onstage by Napster co-founder and Spotify investor Sean Parker, drummer Lars Ulrich was amicable: "We have more in common than the whole thing that happened twelve years ago."