Auditions are no long as popular a tool for casting, as film producers are now using Facebook and Twitter to make their final decisions on who to cast for certain roles.

This process involves producers getting a list of actors and actresses they deem fit for the character and checking Facebook and Twitter to see how many followers they have.

Ted Chalmer, president of Tom Cat Films, said that bigger fan bases can help promote movies, which worked for him when he went to Facebook and cast tattoo model Rachelle Nicole Hoffman for his film "Angel of Darkness," Business Insider reported.

Currently, being the biggest stars does not necessarily mean having the biggest number of followers. What makes stars gain popularity in different social media sites is when they offer time to "converse" with their followers, even if this just means a status update or a tweet every now and then.

An example of this phenomena is Tara Reid, who was declared a prized possession for "Sharknado 2: The Second One" and "Sharknado 3: Oh Hell No!" thanks to her half-a-million followers.

The success of social networks in casting actors has helped Facebook and Twitter overthrow IMDB Pro as the source for searching for stars. IMDB Pro is a website that ranks actors and actresses based on the number of times their profile has been searched and viewed in the site.