Ender's Game trailer teased on Google+, promises full preview on May 7th

Film promotion has changed over the years. Sure, there are still posters, trailers, TV spots, and radio and print ads, but now there's also Google+ -- at least for Ender's Game. The upcoming film, based on Orson Scott Card's award winning sci-fi novel, is using the social network to tease fans -- flaunting a brief peek at the film's trailer and advertising a Google+ Hangout with the film's creators. Leading actors Harrison Ford and Asa Butterfield kicked off the hype machine by introducing a tea...