By Tony Maglio LOS ANGELES (TheWrap.com) - MTV's much-talked-about Video Music Awards goosed sales and social media activity for Miley Cyrus, 'NSYNC and Lady Gaga. As TheWrap reported Monday, 'NSYNC's "Bye Bye Bye" sales jumped 156 percent on Amazon overnight, while Justin Timberlake's "Justified" album sales skyrocketed 1,876 percent on Amazon following the boy band's "surprise" reunion during its frontman's Video Vanguard set. Per MTV, Timberlake's performance also garnered 219,800 tweets per minute, with 2.9 million total for the show. ...