An interesting use of Amazon Inside data

Amazon concordanceAmazon has quietly introduced an innovative use of their book data - the complete text of many of the books they sell through their website - showing the frequency of the top 100 words inside the book.

Their Concordance functionality is using a technique which has been demonstrated previously on popular tagging-based (or 'folksonomy') sites such as Flickr, del.icio.us and Technorati that shows the relative frequency of each word by varying the font size used to display it. Until now this had only been seen on sites which allow people to categorize things using a number of tags of their choosing, this being the first I am aware of that takes whole texts and picks out keywords in this way.

(via Waxy)