The Washington Post recently look at some of the movies over the years that have taken different approaches to marketing and spreading the word.  Most have been recognized due to their viral online campaign, some industries have taken their marketing to the streets too.

The first movie they point out is the current hit Paranormal Activity, which cost $15,000 to make but has raked in over $9.1 million thanks to hype around its social marketing campaign which encouraged movie goers to vote to bring the movie to their town.  They also note that The Dark Knight set up various websites centering around the movie and encouraged movie patrons to participate in their virtual scavenger hunt.

Read the full article here.