Some interesting tips in this article on social media in film marketing. A few excerpts:
Movie fans and visitors love behind the scenes marketing of movies
“You have to type what’s going on behind the camera for fans all over the world,” Bennett explained. “It might be the director of photography on how he lit the shot, or in the case of Peter Jackson in King Kong, before Facebook, YouTube and Twitter; he was literally posting photos of prop guys, costume fittings with actors, on the scene location scouts activities and video blogs. Jackson built this buzz that topped a million fans, who were already engaged in the process and the movie by the time he finished it for distribution.”
“You need to target your community groups, mobile interaction, action platforms, and set your goal,”
While these nuggets are pretty relevant to just about any social media campaign, be it film or otherwise, this one is very specific to film marketing:
"The concept is Production is the new Promotion, and the sooner you engage your audience the sooner they are going to grab onto it, and follow the different phases to the point where you get to your last news release or airing."