I just had a look at their website and I think it has possibilities. After reading their 'About' section, I found myself trying to figure out the 'axes of relevance' for the collection of shoes and books and totally failing to see any order there. Perhaps I missed it or maybe they are just randomly arranged.
For something like a search on eBay, I can see how this would be helpful if it took item parameters into account, such as time left at auction, total cost, etc. and arranging them in 'space' according to those parameters. Then the question would be how to let the viewer know what the parameters are and how they are arranged.