Thanks, I hadn't come across that in my search.
That site seems to solve the problem of finding book recommendations in a way that's easily filtered/sorted. I like the fact that it lists additional versions (ebook, pdf, etc.) of the book.
My thoughts were that the community might want to read reviews from a startup-oriented individual rather than the default synopsis from the book's publisher. I also imagined that multiple reviewers could review the same book (either on the hub site or their own blog).