I'm completely lost

So I'm supposed to be learning about the website "Technorati" and how it's revolutionized the blogosphere. I'm not quite sure how. I tried to use the site and find information about "learning 2.0" and see if I could locate any of the blogs by my coworkers and other people who are involved in the learning 2.0 program. No such luck. I guess I just don't see the point of this site especially when I could just as easily use another site, like Bloglines, that has an easier interface to use and actually gives me the information I want. Argh.