From the post:
A little bit of knowledge about GIS and geospatial visualization goes a long way, and is useful across a variety of disciplines, including social sciences, business, humanities and environmental studies and sciences. If you are into open data (who isn’t?) and you like maps and / or data visualization (who doesn’t?!) then it’s definitely worth it to learn about some tools and resources to work with geospatial information.
Source: GIS and Data Tools