Ed Driscoll What makes a hit movie a hit? I guess it isn't box office, according to this piece by the L.A. Times' Joe Horn on promoting the latest version of Superman to gay audiences:But four of the movie marketing executives, all of whom declined to speak on the record, said gay "Superman Returns" interest presented two potential box-office problems. First, teenage moviegoers, especially those in conservative states, might be put off by a movie carrying a gay vibe; among some teens, these executives agreed, saying something "is gay" is still the ultimate put-down. Second, the attention threatens to undermine the film's status as a hard-edged action movie, making it feel softer, more romantic, and thus less interesting to young ticket buyers who crave pyrotechnics.Though "Brokeback Mountain's"...