The site is quite self-explanatory, a large interactive map with more than 100,000 books placed and colored by their similarity. Right now, it's completely based on an algorithm, and things like being written by the same author do not directly affect position or color.
Probably the most interesting feature, apart from the map, is that when clicking on a book similar books will be highlighted based on that. However, there are other features like the ability to create your own lists.
Any feedback will be appreciated. Thank you!