Book Rank

Chris McEvoy, the man behind the Userati, has created an interesting new mashup called Book Rank. Here's how it works:

  1. Take a single book from Amazon as a root.
  2. Take the recommended books for that book.
  3. Repeat until you have reached a distance of 20 from the original book.
  4. Add up the number of recommendations for each book.
  5. Calculate BookRank from the Distance, Recommendations, SalesRank.
  6. Display the 250 books with the highest BookRank.

Seems like a useful, novel way to find books.

Something I've been wondering about these recommendations: is there a way to know whether they're "up" or "down"? I.e., is Amazon recommending something obscure based on a popular book, or something popular based on an obscure one?