Bruce MacEwan’s site is a great one: Adam Smith, Esq. I especially like the tagline: "an inquiry into the economics of law firms." Be sure to check out this post in which several ‘savvy blawgers’ addressed the following question.
"Looking out five to ten years, what will the single most significant change be in terms of how sophisticated law firms (think AmLaw 200) are managed, on the ‘business side’?"
I was listed among the ‘savvy blawgers’ but I really didn’t have feel like I had any great insight to offer. The other blawgers, however, clearly did.