Technorati is totally busted for doing this kind of analysis. As I wrote on Gorman's blog, almost all of my blog's "authority" comes from automatic linking in the sidebars of several other blogs, blogs which never ever engage mine in any other way. In sum: Technorati's authority is a worthless measure of my blog's interestingness. Look closely at the authority of other blogs and I'm certain you'll see the same pattern.
Update (2008-09-10): It was all for nothing after all, which is good because the last thing we need is more gatekeepers to the blogosphere.