Which film's marketing campaign pioneered the use of 'found footage' viral marketing that created mystery around whether the events depicted were real, leading to unprecedented box office success?

The film and television industry relies heavily on strategic marketing campaigns to build anticipation and drive viewership. From teaser trailers to innovative promotional partnerships, the marketing strategy can make or break a production's success. This trivia question tests your knowledge of a groundbreaking marketing campaign that changed how entertainment properties are promoted. Can you identify the correct campaign that revolutionized film marketing?

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