Justin Bieber, Selena Gomez Kiss Among Billboard Awards Highlights

They say that what happens in Vegas stays in Vegas, but on Sunday night, pop culture lovers everywhere were treated to a festival of debauchery and fun at the Billboard Music Awards, which were held in Sin City and broadcast live on ABC.There were two kisses that will certainly have people talking for days. When Britney Spears took the stage with Rihanna for their sexy performance of "S&M," the