To celebrate the 20th anniversary of The Joshua Tree, Irish rockers/builders of tall towers U2 will reissue their epic 1987 album in multiple formats on November 20th. The remastered album will be available as a single disc, double disc, double disc/single DVD, and double vinyl. The second disc will likely feature demos, alternate takes, and B-sides from the Brian Eno-produced sessions. The DVD will feature a July 4th, 1987 concert as well as the documentary Outside, It’s America. To combat against video piracy and events like the Britney Spears’ “Gimme More” leak, YouTube will soon employ anti-piracy filters to automatically remove copyrighted clips. The computer program that will oversee this action will also give copyright holders the right to add ads to their videos if they choose to keep the clips posted on YouTube. Diddy, not one to shy away from nightclub altercations, has decided not to turn himself in to authorities after allegedly punching a man several times during an incident at New York hotspot Kiosk this weekend. In a recording session that might have rivaled the recording of Exile on Main St., Amy Winehouse and Pete Doherty’s Babyshambles collaborated on a song. John Mayer begs of you: Please don’t overanalyze his lyrics and think his new songs have anything to do with Jessica Simpson.