From what I heard, the film played on college campuses at midnight screenings and such, then went into a handful of non campus theaters after the deal. They added more marketing dollars as it was clearly liked by the audiences. Either way, in order to open wide, marketing dollars have to be spent - in this case, not a whole for a fantastic return on the investment. I know that I never heard of the film until I saw the trailer on ABC in primetime.
Michael
Michael