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The $15,000 horror film Paranormal Activity was a box office success, making over $7 million through word-of-mouth marketing on social media. Fans on Twitter and Facebook did much of the promotion work, tweeting about the film and creating fan pages and groups that shared reactions and reviews to generate buzz. This grassroots social media campaign helped grow demand for the film and discussions about it, leading more people to want to see what all the conversation was about.












































