Buzz about the David Fincher-directed film about the contested origins of Facebook, based on Ben Mezrich's book "The Accidental Billionaires," has been growing now that its hyped premiere at the New York Film Festival is less than a month away. Its wide theatrical release is on October 1. This week, at least in the mainstream press, the narrative has taken a turn for the speculative: Will the film actually be both a box-office hit and an awards contender?