I know some might be expecting me to heckle Sony for using something so ridiculous, but TBH I think this is a great idea. I can see that a lot of thought was put into sorting the books and asking the questions, and I think this chart shows the touch of a real bookseller and not just some piece of software.
That human touch is both highly appealing to this reader and something I don't see in most ebookstores. It gives the chart a sense that this is someone's personal recommendations, and that makes me much more interested in buying the ebooks.
The chart went up on Sunday, and Sony plans to add more charts in the coming weeks.