Very interesting quantitative measurement of keywords used in the International Movie Database. Sameet Sreenivasan from the Social and Cognitive Networks Academic Research Center, Troy, USA has developed a sophisticated mathematical approach to gain meaningful information from meta data people added to IMDb.
The picture below is just one example of the outcome of the year 2013. Find more here in an nature.com article.
One note for improvements: If color is used to depict certain information – keep the color used for recurring keywords. E.g. compare “beautiful-woman” in a) to c).