Napster co-founder, former Facebook president and current Airtime CEO Sean Parker subbed in for Zynga CEO Mark Pincus today onstage at Web 2.0 Summit, when Pincus couldn’t speak because of Zynga’s quiet period (sidenote: expect an IPO within the next month, yo). You know what’s cool? That the 15-year-old Parker, oddly enough, used to intern for Mark Pincus’ Washington, D.C.