Sifry also spends time defining a group he calls the Magic Middle-bloggers who are in niche publishing with 20-100 other sites linking to them-as sometimes radically changing the economics of trade publishing with their interesting, topical, and influential blogs. These are the blogs that people like you and I read and write.
Sounds like Educational Technology and Life. ;)
The rest of the article is a good discussion of authority (or how it works at technorati), and some new features of technorati. I’m interested in the “explore” feature.