One of the coolest new features of the revamped Technorati has to be the BookTalk section.
It profiles "[t]he books people are talking about now," and it kicks some serious butt. Being able to see which books are popular at the moment (literally), and being able to find the blogs where the books are being talked about is pretty valuable, and that's especially true if, like me, you don't trust critics.
It's nice to be able to read the opinions of real people rather than those who are getting kickbacks (OK, yeah, I'm paranoid).