Go figure: by counting how many people are excited for a film the week before it opens, you can estimate how much money it makes. Even if the model is perfect and works everytime, it is not giving you any useful information.
If the prediction can be moved from one week out to a month or more out from the release of the film, there may be actual applications. For instance, helping theaters decide which movies to show and on how many screens, or how many weeks to run a movie for.