Who knew a tweet could be worth so much? The marketing power of social media users could be validated by a new study that reports a single tweet, when sent out one to five weeks before a film’s release, can add $560 to a movie’s opening weekend box office numbers. Catchy tweets illustrating intentions to see the movie or encouraging others to watch are worth $4,420 four weeks before the movie’s release. More than 30 million people reportedly tweet about movies each month, and this could be valuable information as Hollywood struggles at a time when there are increasingly more entertainment options for young consumers. (MediaPost)