The document discusses how linking open data and creating mashups can connect disparate sources of information on the web and allow users to mix and reuse existing data. It provides examples of how linking data through common identifiers and APIs allows new features and visualizations to be created with little work by combining existing datasets from different sources like YouTube and Flandersmusic.be. The benefits highlighted include enriching data, visualizing data in new ways, mixing different datasets, and reusing existing open data.
