Which film pioneered the 'viral marketing' concept with its groundbreaking online campaign that presented the fictional story as a real missing persons case?

Test your knowledge about some of the most innovative and successful product marketing campaigns in film and television history! The entertainment industry spends billions on marketing their productions, creating iconic taglines, memorable campaigns, and generating buzz that can make or break a release. How well do you know the marketing strategies behind some of Hollywood's biggest hits?

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The Blair Witch Project (1999)
Cloverfield (2008)
Paranormal Activity (2007)
The Ring (2002)